Home / 20,671.80-31,013.77-10,805.59

Finding the Fourth Proportional to 20,671.80, 31,013.77 and 10,805.59

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Solution

The fourth proportional to 20,671.80, 31,013.77 and 10,805.59 is: 16,211.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.80 : 31,013.77 = 10,805.59 : x
  2. Step 2: Convert to fraction form
    20,671.80/31,013.77 = 10,805.59/x
  3. Step 3: Cross multiply
    20,671.80x = 31,013.77 × 10,805.59
  4. Step 4: Simplify right side
    20,671.80x = 335,122,082.97
  5. Step 5: Solve for x
    x = 335,122,082.97/20,671.80
  6. Step 6: Final answer
    x = 16,211.56

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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.