Home / 20,382.06-28,127.55-11,883.96

Finding the Fourth Proportional to 20,382.06, 28,127.55 and 11,883.96

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Solution

The fourth proportional to 20,382.06, 28,127.55 and 11,883.96 is: 16,400.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,382.06 : 28,127.55 = 11,883.96 : x
  2. Step 2: Convert to fraction form
    20,382.06/28,127.55 = 11,883.96/x
  3. Step 3: Cross multiply
    20,382.06x = 28,127.55 × 11,883.96
  4. Step 4: Simplify right side
    20,382.06x = 334,266,679.10
  5. Step 5: Solve for x
    x = 334,266,679.10/20,382.06
  6. Step 6: Final answer
    x = 16,400.04

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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.