Home / 28,679,128.85-39,577,203.50-15,626,387.76

Finding the Fourth Proportional to 28,679,128.85, 39,577,203.50 and 15,626,387.76

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Solution

The fourth proportional to 28,679,128.85, 39,577,203.50 and 15,626,387.76 is: 21,564,418.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,679,128.85 : 39,577,203.50 = 15,626,387.76 : x
  2. Step 2: Convert to fraction form
    28,679,128.85/39,577,203.50 = 15,626,387.76/x
  3. Step 3: Cross multiply
    28,679,128.85x = 39,577,203.50 × 15,626,387.76
  4. Step 4: Simplify right side
    28,679,128.85x = 618,448,728,347,429.12
  5. Step 5: Solve for x
    x = 618,448,728,347,429.12/28,679,128.85
  6. Step 6: Final answer
    x = 21,564,418.21

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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.