Home / 20,837.72-28,750.17-12,336.11

Finding the Fourth Proportional to 20,837.72, 28,750.17 and 12,336.11

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Solution

The fourth proportional to 20,837.72, 28,750.17 and 12,336.11 is: 17,020.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.72 : 28,750.17 = 12,336.11 : x
  2. Step 2: Convert to fraction form
    20,837.72/28,750.17 = 12,336.11/x
  3. Step 3: Cross multiply
    20,837.72x = 28,750.17 × 12,336.11
  4. Step 4: Simplify right side
    20,837.72x = 354,665,269.96
  5. Step 5: Solve for x
    x = 354,665,269.96/20,837.72
  6. Step 6: Final answer
    x = 17,020.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.