Home / 12,321.32-18,565.11-10,178.04

Finding the Fourth Proportional to 12,321.32, 18,565.11 and 10,178.04

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Solution

The fourth proportional to 12,321.32, 18,565.11 and 10,178.04 is: 15,335.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321.32 : 18,565.11 = 10,178.04 : x
  2. Step 2: Convert to fraction form
    12,321.32/18,565.11 = 10,178.04/x
  3. Step 3: Cross multiply
    12,321.32x = 18,565.11 × 10,178.04
  4. Step 4: Simplify right side
    12,321.32x = 188,956,432.18
  5. Step 5: Solve for x
    x = 188,956,432.18/12,321.32
  6. Step 6: Final answer
    x = 15,335.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.