Home / 21,332.20-29,441.24-12,377.80

Finding the Fourth Proportional to 21,332.20, 29,441.24 and 12,377.80

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Solution

The fourth proportional to 21,332.20, 29,441.24 and 12,377.80 is: 17,082.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.20 : 29,441.24 = 12,377.80 : x
  2. Step 2: Convert to fraction form
    21,332.20/29,441.24 = 12,377.80/x
  3. Step 3: Cross multiply
    21,332.20x = 29,441.24 × 12,377.80
  4. Step 4: Simplify right side
    21,332.20x = 364,417,780.47
  5. Step 5: Solve for x
    x = 364,417,780.47/21,332.20
  6. Step 6: Final answer
    x = 17,082.99

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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.