Home / 20,937.66-31,394.19-8,458.08

Finding the Fourth Proportional to 20,937.66, 31,394.19 and 8,458.08

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Solution

The fourth proportional to 20,937.66, 31,394.19 and 8,458.08 is: 12,682.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.66 : 31,394.19 = 8,458.08 : x
  2. Step 2: Convert to fraction form
    20,937.66/31,394.19 = 8,458.08/x
  3. Step 3: Cross multiply
    20,937.66x = 31,394.19 × 8,458.08
  4. Step 4: Simplify right side
    20,937.66x = 265,534,570.56
  5. Step 5: Solve for x
    x = 265,534,570.56/20,937.66
  6. Step 6: Final answer
    x = 12,682.15

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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.