Home / 10,221.26-15,332.88-3,981.78

Finding the Fourth Proportional to 10,221.26, 15,332.88 and 3,981.78

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Solution

The fourth proportional to 10,221.26, 15,332.88 and 3,981.78 is: 5,973.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,221.26 : 15,332.88 = 3,981.78 : x
  2. Step 2: Convert to fraction form
    10,221.26/15,332.88 = 3,981.78/x
  3. Step 3: Cross multiply
    10,221.26x = 15,332.88 × 3,981.78
  4. Step 4: Simplify right side
    10,221.26x = 61,052,154.93
  5. Step 5: Solve for x
    x = 61,052,154.93/10,221.26
  6. Step 6: Final answer
    x = 5,973.06

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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.