Home / 20,830.79-31,248.18-5,837.91

Finding the Fourth Proportional to 20,830.79, 31,248.18 and 5,837.91

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Solution

The fourth proportional to 20,830.79, 31,248.18 and 5,837.91 is: 8,757.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.79 : 31,248.18 = 5,837.91 : x
  2. Step 2: Convert to fraction form
    20,830.79/31,248.18 = 5,837.91/x
  3. Step 3: Cross multiply
    20,830.79x = 31,248.18 × 5,837.91
  4. Step 4: Simplify right side
    20,830.79x = 182,424,062.50
  5. Step 5: Solve for x
    x = 182,424,062.50/20,830.79
  6. Step 6: Final answer
    x = 8,757.43

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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.