Home / 21,084.23-31,626.35-8,610.13

Finding the Fourth Proportional to 21,084.23, 31,626.35 and 8,610.13

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Solution

The fourth proportional to 21,084.23, 31,626.35 and 8,610.13 is: 12,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,084.23 : 31,626.35 = 8,610.13 : x
  2. Step 2: Convert to fraction form
    21,084.23/31,626.35 = 8,610.13/x
  3. Step 3: Cross multiply
    21,084.23x = 31,626.35 × 8,610.13
  4. Step 4: Simplify right side
    21,084.23x = 272,306,984.93
  5. Step 5: Solve for x
    x = 272,306,984.93/21,084.23
  6. Step 6: Final answer
    x = 12,915.20

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Half scale
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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.