Home / 20,339.53-28,068.25-11,387.04

Finding the Fourth Proportional to 20,339.53, 28,068.25 and 11,387.04

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Solution

The fourth proportional to 20,339.53, 28,068.25 and 11,387.04 is: 15,713.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,339.53 : 28,068.25 = 11,387.04 : x
  2. Step 2: Convert to fraction form
    20,339.53/28,068.25 = 11,387.04/x
  3. Step 3: Cross multiply
    20,339.53x = 28,068.25 × 11,387.04
  4. Step 4: Simplify right side
    20,339.53x = 319,614,145.14
  5. Step 5: Solve for x
    x = 319,614,145.14/20,339.53
  6. Step 6: Final answer
    x = 15,713.94

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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.