Home / 20,691.77-31,024.29-8,853.26

Finding the Fourth Proportional to 20,691.77, 31,024.29 and 8,853.26

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Solution

The fourth proportional to 20,691.77, 31,024.29 and 8,853.26 is: 13,274.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691.77 : 31,024.29 = 8,853.26 : x
  2. Step 2: Convert to fraction form
    20,691.77/31,024.29 = 8,853.26/x
  3. Step 3: Cross multiply
    20,691.77x = 31,024.29 × 8,853.26
  4. Step 4: Simplify right side
    20,691.77x = 274,666,183.25
  5. Step 5: Solve for x
    x = 274,666,183.25/20,691.77
  6. Step 6: Final answer
    x = 13,274.18

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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.