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Finding the Fourth Proportional to 39,110.87, 58,668.11 and 11,408.87

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Solution

The fourth proportional to 39,110.87, 58,668.11 and 11,408.87 is: 17,113.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,110.87 : 58,668.11 = 11,408.87 : x
  2. Step 2: Convert to fraction form
    39,110.87/58,668.11 = 11,408.87/x
  3. Step 3: Cross multiply
    39,110.87x = 58,668.11 × 11,408.87
  4. Step 4: Simplify right side
    39,110.87x = 669,336,489.75
  5. Step 5: Solve for x
    x = 669,336,489.75/39,110.87
  6. Step 6: Final answer
    x = 17,113.82

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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.