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Finding the Fourth Proportional to 25,391.40, 38,082.90 and 8,524.20

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Solution

The fourth proportional to 25,391.40, 38,082.90 and 8,524.20 is: 12,784.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,391.40 : 38,082.90 = 8,524.20 : x
  2. Step 2: Convert to fraction form
    25,391.40/38,082.90 = 8,524.20/x
  3. Step 3: Cross multiply
    25,391.40x = 38,082.90 × 8,524.20
  4. Step 4: Simplify right side
    25,391.40x = 324,626,256.18
  5. Step 5: Solve for x
    x = 324,626,256.18/25,391.40
  6. Step 6: Final answer
    x = 12,784.89

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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.