Home / 20,337.84-28,067.52-11,384.80

Finding the Fourth Proportional to 20,337.84, 28,067.52 and 11,384.80

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Solution

The fourth proportional to 20,337.84, 28,067.52 and 11,384.80 is: 15,711.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.84 : 28,067.52 = 11,384.80 : x
  2. Step 2: Convert to fraction form
    20,337.84/28,067.52 = 11,384.80/x
  3. Step 3: Cross multiply
    20,337.84x = 28,067.52 × 11,384.80
  4. Step 4: Simplify right side
    20,337.84x = 319,543,101.70
  5. Step 5: Solve for x
    x = 319,543,101.70/20,337.84
  6. Step 6: Final answer
    x = 15,711.75

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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.