Home / 39,170.70-58,738.61-12,511.78

Finding the Fourth Proportional to 39,170.70, 58,738.61 and 12,511.78

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Solution

The fourth proportional to 39,170.70, 58,738.61 and 12,511.78 is: 18,762.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,170.70 : 58,738.61 = 12,511.78 : x
  2. Step 2: Convert to fraction form
    39,170.70/58,738.61 = 12,511.78/x
  3. Step 3: Cross multiply
    39,170.70x = 58,738.61 × 12,511.78
  4. Step 4: Simplify right side
    39,170.70x = 734,924,503.27
  5. Step 5: Solve for x
    x = 734,924,503.27/39,170.70
  6. Step 6: Final answer
    x = 18,762.10

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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.