Home / 20,841.51-31,195.14-13,731.62

Finding the Fourth Proportional to 20,841.51, 31,195.14 and 13,731.62

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Solution

The fourth proportional to 20,841.51, 31,195.14 and 13,731.62 is: 20,553.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,841.51 : 31,195.14 = 13,731.62 : x
  2. Step 2: Convert to fraction form
    20,841.51/31,195.14 = 13,731.62/x
  3. Step 3: Cross multiply
    20,841.51x = 31,195.14 × 13,731.62
  4. Step 4: Simplify right side
    20,841.51x = 428,359,808.33
  5. Step 5: Solve for x
    x = 428,359,808.33/20,841.51
  6. Step 6: Final answer
    x = 20,553.20

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1.5x scale

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.