Home / 20,407,586.90-28,161,406.77-12,672,463.28

Finding the Fourth Proportional to 20,407,586.90, 28,161,406.77 and 12,672,463.28

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Solution

The fourth proportional to 20,407,586.90, 28,161,406.77 and 12,672,463.28 is: 17,487,339.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,586.90 : 28,161,406.77 = 12,672,463.28 : x
  2. Step 2: Convert to fraction form
    20,407,586.90/28,161,406.77 = 12,672,463.28/x
  3. Step 3: Cross multiply
    20,407,586.90x = 28,161,406.77 × 12,672,463.28
  4. Step 4: Simplify right side
    20,407,586.90x = 356,874,393,205,968.38
  5. Step 5: Solve for x
    x = 356,874,393,205,968.38/20,407,586.90
  6. Step 6: Final answer
    x = 17,487,339.14

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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.