Home / 20,407,584.90-28,161,404-12,672,461.28

Finding the Fourth Proportional to 20,407,584.90, 28,161,404 and 12,672,461.28

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Solution

The fourth proportional to 20,407,584.90, 28,161,404 and 12,672,461.28 is: 17,487,336.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,584.90 : 28,161,404 = 12,672,461.28 : x
  2. Step 2: Convert to fraction form
    20,407,584.90/28,161,404 = 12,672,461.28/x
  3. Step 3: Cross multiply
    20,407,584.90x = 28,161,404 × 12,672,461.28
  4. Step 4: Simplify right side
    20,407,584.90x = 356,874,301,780,437.12
  5. Step 5: Solve for x
    x = 356,874,301,780,437.12/20,407,584.90
  6. Step 6: Final answer
    x = 17,487,336.38

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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.