Home / 40,821.68-61,233.48-13,119.92

Finding the Fourth Proportional to 40,821.68, 61,233.48 and 13,119.92

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Solution

The fourth proportional to 40,821.68, 61,233.48 and 13,119.92 is: 19,680.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,821.68 : 61,233.48 = 13,119.92 : x
  2. Step 2: Convert to fraction form
    40,821.68/61,233.48 = 13,119.92/x
  3. Step 3: Cross multiply
    40,821.68x = 61,233.48 × 13,119.92
  4. Step 4: Simplify right side
    40,821.68x = 803,378,358.92
  5. Step 5: Solve for x
    x = 803,378,358.92/40,821.68
  6. Step 6: Final answer
    x = 19,680.19

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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.