Home / 12,385.68-18,572.76-6,540.72

Finding the Fourth Proportional to 12,385.68, 18,572.76 and 6,540.72

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Solution

The fourth proportional to 12,385.68, 18,572.76 and 6,540.72 is: 9,808.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.68 : 18,572.76 = 6,540.72 : x
  2. Step 2: Convert to fraction form
    12,385.68/18,572.76 = 6,540.72/x
  3. Step 3: Cross multiply
    12,385.68x = 18,572.76 × 6,540.72
  4. Step 4: Simplify right side
    12,385.68x = 121,479,222.79
  5. Step 5: Solve for x
    x = 121,479,222.79/12,385.68
  6. Step 6: Final answer
    x = 9,808.04

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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.