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Finding the Fourth Proportional to 12,483.64, 18,715.30 and 8,524.91

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Solution

The fourth proportional to 12,483.64, 18,715.30 and 8,524.91 is: 12,780.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.64 : 18,715.30 = 8,524.91 : x
  2. Step 2: Convert to fraction form
    12,483.64/18,715.30 = 8,524.91/x
  3. Step 3: Cross multiply
    12,483.64x = 18,715.30 × 8,524.91
  4. Step 4: Simplify right side
    12,483.64x = 159,546,248.12
  5. Step 5: Solve for x
    x = 159,546,248.12/12,483.64
  6. Step 6: Final answer
    x = 12,780.43

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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.