Home / 41,720.76-62,581.32-12,138.72

Finding the Fourth Proportional to 41,720.76, 62,581.32 and 12,138.72

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Solution

The fourth proportional to 41,720.76, 62,581.32 and 12,138.72 is: 18,208.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,720.76 : 62,581.32 = 12,138.72 : x
  2. Step 2: Convert to fraction form
    41,720.76/62,581.32 = 12,138.72/x
  3. Step 3: Cross multiply
    41,720.76x = 62,581.32 × 12,138.72
  4. Step 4: Simplify right side
    41,720.76x = 759,657,120.71
  5. Step 5: Solve for x
    x = 759,657,120.71/41,720.76
  6. Step 6: Final answer
    x = 18,208.13

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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.