Home / 20,691.86-31,028.67-5,897.41

Finding the Fourth Proportional to 20,691.86, 31,028.67 and 5,897.41

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Solution

The fourth proportional to 20,691.86, 31,028.67 and 5,897.41 is: 8,843.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691.86 : 31,028.67 = 5,897.41 : x
  2. Step 2: Convert to fraction form
    20,691.86/31,028.67 = 5,897.41/x
  3. Step 3: Cross multiply
    20,691.86x = 31,028.67 × 5,897.41
  4. Step 4: Simplify right side
    20,691.86x = 182,988,711.17
  5. Step 5: Solve for x
    x = 182,988,711.17/20,691.86
  6. Step 6: Final answer
    x = 8,843.51

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1.5x scale

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.