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Finding the Fourth Proportional to 12,302.70, 18,454.13 and 5,276.78

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Solution

The fourth proportional to 12,302.70, 18,454.13 and 5,276.78 is: 7,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,302.70 : 18,454.13 = 5,276.78 : x
  2. Step 2: Convert to fraction form
    12,302.70/18,454.13 = 5,276.78/x
  3. Step 3: Cross multiply
    12,302.70x = 18,454.13 × 5,276.78
  4. Step 4: Simplify right side
    12,302.70x = 97,378,354.44
  5. Step 5: Solve for x
    x = 97,378,354.44/12,302.70
  6. Step 6: Final answer
    x = 7,915.20

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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.