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Finding the Fourth Proportional to 10,247.70, 15,371.55 and 10,101.90

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Solution

The fourth proportional to 10,247.70, 15,371.55 and 10,101.90 is: 15,152.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,247.70 : 15,371.55 = 10,101.90 : x
  2. Step 2: Convert to fraction form
    10,247.70/15,371.55 = 10,101.90/x
  3. Step 3: Cross multiply
    10,247.70x = 15,371.55 × 10,101.90
  4. Step 4: Simplify right side
    10,247.70x = 155,281,860.95
  5. Step 5: Solve for x
    x = 155,281,860.95/10,247.70
  6. Step 6: Final answer
    x = 15,152.85

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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.