Home / 20,538.06-28,342.92-11,583.80

Finding the Fourth Proportional to 20,538.06, 28,342.92 and 11,583.80

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Solution

The fourth proportional to 20,538.06, 28,342.92 and 11,583.80 is: 15,985.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.06 : 28,342.92 = 11,583.80 : x
  2. Step 2: Convert to fraction form
    20,538.06/28,342.92 = 11,583.80/x
  3. Step 3: Cross multiply
    20,538.06x = 28,342.92 × 11,583.80
  4. Step 4: Simplify right side
    20,538.06x = 328,318,716.70
  5. Step 5: Solve for x
    x = 328,318,716.70/20,538.06
  6. Step 6: Final answer
    x = 15,985.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.