Home / 21,332.60-29,438.42-11,900.92

Finding the Fourth Proportional to 21,332.60, 29,438.42 and 11,900.92

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Solution

The fourth proportional to 21,332.60, 29,438.42 and 11,900.92 is: 16,422.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.60 : 29,438.42 = 11,900.92 : x
  2. Step 2: Convert to fraction form
    21,332.60/29,438.42 = 11,900.92/x
  3. Step 3: Cross multiply
    21,332.60x = 29,438.42 × 11,900.92
  4. Step 4: Simplify right side
    21,332.60x = 350,344,281.35
  5. Step 5: Solve for x
    x = 350,344,281.35/21,332.60
  6. Step 6: Final answer
    x = 16,422.95

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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.