Home / 20,581,084.80-28,403,642.88-11,416,680

Finding the Fourth Proportional to 20,581,084.80, 28,403,642.88 and 11,416,680

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Solution

The fourth proportional to 20,581,084.80, 28,403,642.88 and 11,416,680 is: 15,755,986.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581,084.80 : 28,403,642.88 = 11,416,680 : x
  2. Step 2: Convert to fraction form
    20,581,084.80/28,403,642.88 = 11,416,680/x
  3. Step 3: Cross multiply
    20,581,084.80x = 28,403,642.88 × 11,416,680
  4. Step 4: Simplify right side
    20,581,084.80x = 324,275,301,595,238.38
  5. Step 5: Solve for x
    x = 324,275,301,595,238.38/20,581,084.80
  6. Step 6: Final answer
    x = 15,755,986.86

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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.