Home / 15,121.39-22,686.70-7,731.04

Finding the Fourth Proportional to 15,121.39, 22,686.70 and 7,731.04

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Solution

The fourth proportional to 15,121.39, 22,686.70 and 7,731.04 is: 11,598.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,121.39 : 22,686.70 = 7,731.04 : x
  2. Step 2: Convert to fraction form
    15,121.39/22,686.70 = 7,731.04/x
  3. Step 3: Cross multiply
    15,121.39x = 22,686.70 × 7,731.04
  4. Step 4: Simplify right side
    15,121.39x = 175,391,751.66
  5. Step 5: Solve for x
    x = 175,391,751.66/15,121.39
  6. Step 6: Final answer
    x = 11,598.92

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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.