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Finding the Fourth Proportional to 26,656.75, 39,985.13 and 8,188.75

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Solution

The fourth proportional to 26,656.75, 39,985.13 and 8,188.75 is: 12,283.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,656.75 : 39,985.13 = 8,188.75 : x
  2. Step 2: Convert to fraction form
    26,656.75/39,985.13 = 8,188.75/x
  3. Step 3: Cross multiply
    26,656.75x = 39,985.13 × 8,188.75
  4. Step 4: Simplify right side
    26,656.75x = 327,428,233.29
  5. Step 5: Solve for x
    x = 327,428,233.29/26,656.75
  6. Step 6: Final answer
    x = 12,283.13

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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.