Home / 20,712.60-31,051.89-8,227.26

Finding the Fourth Proportional to 20,712.60, 31,051.89 and 8,227.26

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Solution

The fourth proportional to 20,712.60, 31,051.89 and 8,227.26 is: 12,334.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.60 : 31,051.89 = 8,227.26 : x
  2. Step 2: Convert to fraction form
    20,712.60/31,051.89 = 8,227.26/x
  3. Step 3: Cross multiply
    20,712.60x = 31,051.89 × 8,227.26
  4. Step 4: Simplify right side
    20,712.60x = 255,471,972.52
  5. Step 5: Solve for x
    x = 255,471,972.52/20,712.60
  6. Step 6: Final answer
    x = 12,334.13

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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.