Home / 20,729.59-28,607.12-11,298.13

Finding the Fourth Proportional to 20,729.59, 28,607.12 and 11,298.13

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Solution

The fourth proportional to 20,729.59, 28,607.12 and 11,298.13 is: 15,591.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.59 : 28,607.12 = 11,298.13 : x
  2. Step 2: Convert to fraction form
    20,729.59/28,607.12 = 11,298.13/x
  3. Step 3: Cross multiply
    20,729.59x = 28,607.12 × 11,298.13
  4. Step 4: Simplify right side
    20,729.59x = 323,206,904.19
  5. Step 5: Solve for x
    x = 323,206,904.19/20,729.59
  6. Step 6: Final answer
    x = 15,591.57

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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.