Home / 20,823.60-31,249.23-9,731.15

Finding the Fourth Proportional to 20,823.60, 31,249.23 and 9,731.15

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Solution

The fourth proportional to 20,823.60, 31,249.23 and 9,731.15 is: 14,603.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823.60 : 31,249.23 = 9,731.15 : x
  2. Step 2: Convert to fraction form
    20,823.60/31,249.23 = 9,731.15/x
  3. Step 3: Cross multiply
    20,823.60x = 31,249.23 × 9,731.15
  4. Step 4: Simplify right side
    20,823.60x = 304,090,788.27
  5. Step 5: Solve for x
    x = 304,090,788.27/20,823.60
  6. Step 6: Final answer
    x = 14,603.18

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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.