Home / 21,332.64-31,932-15,487.68

Finding the Fourth Proportional to 21,332.64, 31,932 and 15,487.68

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Solution

The fourth proportional to 21,332.64, 31,932 and 15,487.68 is: 23,182.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.64 : 31,932 = 15,487.68 : x
  2. Step 2: Convert to fraction form
    21,332.64/31,932 = 15,487.68/x
  3. Step 3: Cross multiply
    21,332.64x = 31,932 × 15,487.68
  4. Step 4: Simplify right side
    21,332.64x = 494,552,597.76
  5. Step 5: Solve for x
    x = 494,552,597.76/21,332.64
  6. Step 6: Final answer
    x = 23,182.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.