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Finding the Fourth Proportional to 18,510.12, 27,765.18 and 6,206.76

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Solution

The fourth proportional to 18,510.12, 27,765.18 and 6,206.76 is: 9,310.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,510.12 : 27,765.18 = 6,206.76 : x
  2. Step 2: Convert to fraction form
    18,510.12/27,765.18 = 6,206.76/x
  3. Step 3: Cross multiply
    18,510.12x = 27,765.18 × 6,206.76
  4. Step 4: Simplify right side
    18,510.12x = 172,331,808.62
  5. Step 5: Solve for x
    x = 172,331,808.62/18,510.12
  6. Step 6: Final answer
    x = 9,310.14

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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.