Home / 21,474.32-29,631.31-12,275.20

Finding the Fourth Proportional to 21,474.32, 29,631.31 and 12,275.20

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Solution

The fourth proportional to 21,474.32, 29,631.31 and 12,275.20 is: 16,937.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,474.32 : 29,631.31 = 12,275.20 : x
  2. Step 2: Convert to fraction form
    21,474.32/29,631.31 = 12,275.20/x
  3. Step 3: Cross multiply
    21,474.32x = 29,631.31 × 12,275.20
  4. Step 4: Simplify right side
    21,474.32x = 363,730,262.86
  5. Step 5: Solve for x
    x = 363,730,262.86/21,474.32
  6. Step 6: Final answer
    x = 16,937.92

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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.