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Finding the Fourth Proportional to 38,459.70, 57,684.69 and 12,167.10

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Solution

The fourth proportional to 38,459.70, 57,684.69 and 12,167.10 is: 18,249.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,459.70 : 57,684.69 = 12,167.10 : x
  2. Step 2: Convert to fraction form
    38,459.70/57,684.69 = 12,167.10/x
  3. Step 3: Cross multiply
    38,459.70x = 57,684.69 × 12,167.10
  4. Step 4: Simplify right side
    38,459.70x = 701,855,391.70
  5. Step 5: Solve for x
    x = 701,855,391.70/38,459.70
  6. Step 6: Final answer
    x = 18,249.11

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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.