Home / 31,428.82-47,186.97-15,857.38

Finding the Fourth Proportional to 31,428.82, 47,186.97 and 15,857.38

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Solution

The fourth proportional to 31,428.82, 47,186.97 and 15,857.38 is: 23,808.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,428.82 : 47,186.97 = 15,857.38 : x
  2. Step 2: Convert to fraction form
    31,428.82/47,186.97 = 15,857.38/x
  3. Step 3: Cross multiply
    31,428.82x = 47,186.97 × 15,857.38
  4. Step 4: Simplify right side
    31,428.82x = 748,261,714.34
  5. Step 5: Solve for x
    x = 748,261,714.34/31,428.82
  6. Step 6: Final answer
    x = 23,808.14

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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.