Home / 21,066.75-31,605.32-6,275.61

Finding the Fourth Proportional to 21,066.75, 31,605.32 and 6,275.61

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Solution

The fourth proportional to 21,066.75, 31,605.32 and 6,275.61 is: 9,414.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,066.75 : 31,605.32 = 6,275.61 : x
  2. Step 2: Convert to fraction form
    21,066.75/31,605.32 = 6,275.61/x
  3. Step 3: Cross multiply
    21,066.75x = 31,605.32 × 6,275.61
  4. Step 4: Simplify right side
    21,066.75x = 198,342,677.93
  5. Step 5: Solve for x
    x = 198,342,677.93/21,066.75
  6. Step 6: Final answer
    x = 9,414.96

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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.