Home / 20,764.52-28,655.16-11,332.88

Finding the Fourth Proportional to 20,764.52, 28,655.16 and 11,332.88

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Solution

The fourth proportional to 20,764.52, 28,655.16 and 11,332.88 is: 15,639.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.52 : 28,655.16 = 11,332.88 : x
  2. Step 2: Convert to fraction form
    20,764.52/28,655.16 = 11,332.88/x
  3. Step 3: Cross multiply
    20,764.52x = 28,655.16 × 11,332.88
  4. Step 4: Simplify right side
    20,764.52x = 324,745,489.66
  5. Step 5: Solve for x
    x = 324,745,489.66/20,764.52
  6. Step 6: Final answer
    x = 15,639.44

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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.