Home / 21,042,853,989.75-29,038,907,165.00-11,397,344,013.63

Finding the Fourth Proportional to 21,042,853,989.75, 29,038,907,165.00 and 11,397,344,013.63

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Solution

The fourth proportional to 21,042,853,989.75, 29,038,907,165.00 and 11,397,344,013.63 is: 15,728,209,438.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042,853,989.75 : 29,038,907,165.00 = 11,397,344,013.63 : x
  2. Step 2: Convert to fraction form
    21,042,853,989.75/29,038,907,165.00 = 11,397,344,013.63/x
  3. Step 3: Cross multiply
    21,042,853,989.75x = 29,038,907,165.00 × 11,397,344,013.63
  4. Step 4: Simplify right side
    21,042,853,989.75x = 330,966,414,739,313,065,984
  5. Step 5: Solve for x
    x = 330,966,414,739,313,065,984/21,042,853,989.75
  6. Step 6: Final answer
    x = 15,728,209,438.73

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.