Home / 20,680.61-31,021.29-5,889.92

Finding the Fourth Proportional to 20,680.61, 31,021.29 and 5,889.92

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Solution

The fourth proportional to 20,680.61, 31,021.29 and 5,889.92 is: 8,834.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.61 : 31,021.29 = 5,889.92 : x
  2. Step 2: Convert to fraction form
    20,680.61/31,021.29 = 5,889.92/x
  3. Step 3: Cross multiply
    20,680.61x = 31,021.29 × 5,889.92
  4. Step 4: Simplify right side
    20,680.61x = 182,712,761.29
  5. Step 5: Solve for x
    x = 182,712,761.29/20,680.61
  6. Step 6: Final answer
    x = 8,834.98

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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.