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Finding the Fourth Proportional to 10,885.73, 15,052.46 and 8,643.65

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Solution

The fourth proportional to 10,885.73, 15,052.46 and 8,643.65 is: 11,952.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,885.73 : 15,052.46 = 8,643.65 : x
  2. Step 2: Convert to fraction form
    10,885.73/15,052.46 = 8,643.65/x
  3. Step 3: Cross multiply
    10,885.73x = 15,052.46 × 8,643.65
  4. Step 4: Simplify right side
    10,885.73x = 130,108,195.88
  5. Step 5: Solve for x
    x = 130,108,195.88/10,885.73
  6. Step 6: Final answer
    x = 11,952.18

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.