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Finding the Fourth Proportional to 25,588.80, 38,404.80 and 12,452.40

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Solution

The fourth proportional to 25,588.80, 38,404.80 and 12,452.40 is: 18,689.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,588.80 : 38,404.80 = 12,452.40 : x
  2. Step 2: Convert to fraction form
    25,588.80/38,404.80 = 12,452.40/x
  3. Step 3: Cross multiply
    25,588.80x = 38,404.80 × 12,452.40
  4. Step 4: Simplify right side
    25,588.80x = 478,231,931.52
  5. Step 5: Solve for x
    x = 478,231,931.52/25,588.80
  6. Step 6: Final answer
    x = 18,689.11

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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.