Home / 21,947.16-30,286.85-11,875.38

Finding the Fourth Proportional to 21,947.16, 30,286.85 and 11,875.38

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Solution

The fourth proportional to 21,947.16, 30,286.85 and 11,875.38 is: 16,387.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,947.16 : 30,286.85 = 11,875.38 : x
  2. Step 2: Convert to fraction form
    21,947.16/30,286.85 = 11,875.38/x
  3. Step 3: Cross multiply
    21,947.16x = 30,286.85 × 11,875.38
  4. Step 4: Simplify right side
    21,947.16x = 359,667,882.44
  5. Step 5: Solve for x
    x = 359,667,882.44/21,947.16
  6. Step 6: Final answer
    x = 16,387.90

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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.