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Finding the Fourth Proportional to 12,349.10, 18,523.65 and 7,416.20

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Solution

The fourth proportional to 12,349.10, 18,523.65 and 7,416.20 is: 11,124.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,349.10 : 18,523.65 = 7,416.20 : x
  2. Step 2: Convert to fraction form
    12,349.10/18,523.65 = 7,416.20/x
  3. Step 3: Cross multiply
    12,349.10x = 18,523.65 × 7,416.20
  4. Step 4: Simplify right side
    12,349.10x = 137,375,093.13
  5. Step 5: Solve for x
    x = 137,375,093.13/12,349.10
  6. Step 6: Final answer
    x = 11,124.30

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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.