Home / 21,375.38-32,069.56-10,278.92

Finding the Fourth Proportional to 21,375.38, 32,069.56 and 10,278.92

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Solution

The fourth proportional to 21,375.38, 32,069.56 and 10,278.92 is: 15,421.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,375.38 : 32,069.56 = 10,278.92 : x
  2. Step 2: Convert to fraction form
    21,375.38/32,069.56 = 10,278.92/x
  3. Step 3: Cross multiply
    21,375.38x = 32,069.56 × 10,278.92
  4. Step 4: Simplify right side
    21,375.38x = 329,640,441.68
  5. Step 5: Solve for x
    x = 329,640,441.68/21,375.38
  6. Step 6: Final answer
    x = 15,421.50

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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.