Home / 20,382.14-28,126.76-11,886.14

Finding the Fourth Proportional to 20,382.14, 28,126.76 and 11,886.14

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Solution

The fourth proportional to 20,382.14, 28,126.76 and 11,886.14 is: 16,402.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,382.14 : 28,126.76 = 11,886.14 : x
  2. Step 2: Convert to fraction form
    20,382.14/28,126.76 = 11,886.14/x
  3. Step 3: Cross multiply
    20,382.14x = 28,126.76 × 11,886.14
  4. Step 4: Simplify right side
    20,382.14x = 334,318,607.11
  5. Step 5: Solve for x
    x = 334,318,607.11/20,382.14
  6. Step 6: Final answer
    x = 16,402.53

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Half scale
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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.