Home / 18,381.20-27,565.24-8,518.64

Finding the Fourth Proportional to 18,381.20, 27,565.24 and 8,518.64

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Solution

The fourth proportional to 18,381.20, 27,565.24 and 8,518.64 is: 12,774.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.20 : 27,565.24 = 8,518.64 : x
  2. Step 2: Convert to fraction form
    18,381.20/27,565.24 = 8,518.64/x
  3. Step 3: Cross multiply
    18,381.20x = 27,565.24 × 8,518.64
  4. Step 4: Simplify right side
    18,381.20x = 234,818,356.07
  5. Step 5: Solve for x
    x = 234,818,356.07/18,381.20
  6. Step 6: Final answer
    x = 12,774.92

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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.