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Finding the Fourth Proportional to 10,340.70, 15,511.05 and 7,446.30

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Solution

The fourth proportional to 10,340.70, 15,511.05 and 7,446.30 is: 11,169.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,340.70 : 15,511.05 = 7,446.30 : x
  2. Step 2: Convert to fraction form
    10,340.70/15,511.05 = 7,446.30/x
  3. Step 3: Cross multiply
    10,340.70x = 15,511.05 × 7,446.30
  4. Step 4: Simplify right side
    10,340.70x = 115,499,931.62
  5. Step 5: Solve for x
    x = 115,499,931.62/10,340.70
  6. Step 6: Final answer
    x = 11,169.45

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Double scale
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Similar ratio
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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.