Home / 20,680.52-31,010.04-10,145.93

Finding the Fourth Proportional to 20,680.52, 31,010.04 and 10,145.93

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Solution

The fourth proportional to 20,680.52, 31,010.04 and 10,145.93 is: 15,213.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.52 : 31,010.04 = 10,145.93 : x
  2. Step 2: Convert to fraction form
    20,680.52/31,010.04 = 10,145.93/x
  3. Step 3: Cross multiply
    20,680.52x = 31,010.04 × 10,145.93
  4. Step 4: Simplify right side
    20,680.52x = 314,625,540.09
  5. Step 5: Solve for x
    x = 314,625,540.09/20,680.52
  6. Step 6: Final answer
    x = 15,213.62

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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.