Home / 21,868.38-30,180.60-12,436.74

Finding the Fourth Proportional to 21,868.38, 30,180.60 and 12,436.74

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Solution

The fourth proportional to 21,868.38, 30,180.60 and 12,436.74 is: 17,163.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,868.38 : 30,180.60 = 12,436.74 : x
  2. Step 2: Convert to fraction form
    21,868.38/30,180.60 = 12,436.74/x
  3. Step 3: Cross multiply
    21,868.38x = 30,180.60 × 12,436.74
  4. Step 4: Simplify right side
    21,868.38x = 375,348,275.24
  5. Step 5: Solve for x
    x = 375,348,275.24/21,868.38
  6. Step 6: Final answer
    x = 17,163.97

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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.