Home / 21,170.16-31,756.32-8,023.59

Finding the Fourth Proportional to 21,170.16, 31,756.32 and 8,023.59

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Solution

The fourth proportional to 21,170.16, 31,756.32 and 8,023.59 is: 12,035.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,170.16 : 31,756.32 = 8,023.59 : x
  2. Step 2: Convert to fraction form
    21,170.16/31,756.32 = 8,023.59/x
  3. Step 3: Cross multiply
    21,170.16x = 31,756.32 × 8,023.59
  4. Step 4: Simplify right side
    21,170.16x = 254,799,691.59
  5. Step 5: Solve for x
    x = 254,799,691.59/21,170.16
  6. Step 6: Final answer
    x = 12,035.79

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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.