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Finding the Fourth Proportional to 15,885.41, 23,841.23 and 7,990.17

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Solution

The fourth proportional to 15,885.41, 23,841.23 and 7,990.17 is: 11,991.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,885.41 : 23,841.23 = 7,990.17 : x
  2. Step 2: Convert to fraction form
    15,885.41/23,841.23 = 7,990.17/x
  3. Step 3: Cross multiply
    15,885.41x = 23,841.23 × 7,990.17
  4. Step 4: Simplify right side
    15,885.41x = 190,495,440.76
  5. Step 5: Solve for x
    x = 190,495,440.76/15,885.41
  6. Step 6: Final answer
    x = 11,991.85

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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.