Home / 20,451,454.56-28,233,234.72-12,718,988.28

Finding the Fourth Proportional to 20,451,454.56, 28,233,234.72 and 12,718,988.28

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Solution

The fourth proportional to 20,451,454.56, 28,233,234.72 and 12,718,988.28 is: 17,558,564.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451,454.56 : 28,233,234.72 = 12,718,988.28 : x
  2. Step 2: Convert to fraction form
    20,451,454.56/28,233,234.72 = 12,718,988.28/x
  3. Step 3: Cross multiply
    20,451,454.56x = 28,233,234.72 × 12,718,988.28
  4. Step 4: Simplify right side
    20,451,454.56x = 359,098,181,510,169.06
  5. Step 5: Solve for x
    x = 359,098,181,510,169.06/20,451,454.56
  6. Step 6: Final answer
    x = 17,558,564.38

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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.