Home / 20,915,157.52-28,862,288.52-11,622,696.40

Finding the Fourth Proportional to 20,915,157.52, 28,862,288.52 and 11,622,696.40

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Solution

The fourth proportional to 20,915,157.52, 28,862,288.52 and 11,622,696.40 is: 16,038,971.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915,157.52 : 28,862,288.52 = 11,622,696.40 : x
  2. Step 2: Convert to fraction form
    20,915,157.52/28,862,288.52 = 11,622,696.40/x
  3. Step 3: Cross multiply
    20,915,157.52x = 28,862,288.52 × 11,622,696.40
  4. Step 4: Simplify right side
    20,915,157.52x = 335,457,616,877,165.31
  5. Step 5: Solve for x
    x = 335,457,616,877,165.31/20,915,157.52
  6. Step 6: Final answer
    x = 16,038,971.57

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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.