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Finding the Fourth Proportional to 15,153, 20,915.20 and 9,184.92

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Solution

The fourth proportional to 15,153, 20,915.20 and 9,184.92 is: 12,677.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,153 : 20,915.20 = 9,184.92 : x
  2. Step 2: Convert to fraction form
    15,153/20,915.20 = 9,184.92/x
  3. Step 3: Cross multiply
    15,153x = 20,915.20 × 9,184.92
  4. Step 4: Simplify right side
    15,153x = 192,104,438.78
  5. Step 5: Solve for x
    x = 192,104,438.78/15,153
  6. Step 6: Final answer
    x = 12,677.65

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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.