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Finding the Fourth Proportional to 10,245.30, 15,384.15 and 7,491.30

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Solution

The fourth proportional to 10,245.30, 15,384.15 and 7,491.30 is: 11,248.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,245.30 : 15,384.15 = 7,491.30 : x
  2. Step 2: Convert to fraction form
    10,245.30/15,384.15 = 7,491.30/x
  3. Step 3: Cross multiply
    10,245.30x = 15,384.15 × 7,491.30
  4. Step 4: Simplify right side
    10,245.30x = 115,247,282.90
  5. Step 5: Solve for x
    x = 115,247,282.90/10,245.30
  6. Step 6: Final answer
    x = 11,248.80

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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.