Home / 20,847.38-31,271.47-9,747.95

Finding the Fourth Proportional to 20,847.38, 31,271.47 and 9,747.95

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Solution

The fourth proportional to 20,847.38, 31,271.47 and 9,747.95 is: 14,622.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.38 : 31,271.47 = 9,747.95 : x
  2. Step 2: Convert to fraction form
    20,847.38/31,271.47 = 9,747.95/x
  3. Step 3: Cross multiply
    20,847.38x = 31,271.47 × 9,747.95
  4. Step 4: Simplify right side
    20,847.38x = 304,832,545.26
  5. Step 5: Solve for x
    x = 304,832,545.26/20,847.38
  6. Step 6: Final answer
    x = 14,622.11

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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.