Home / 15,122.38-20,863.35-9,151.87

Finding the Fourth Proportional to 15,122.38, 20,863.35 and 9,151.87

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Solution

The fourth proportional to 15,122.38, 20,863.35 and 9,151.87 is: 12,626.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122.38 : 20,863.35 = 9,151.87 : x
  2. Step 2: Convert to fraction form
    15,122.38/20,863.35 = 9,151.87/x
  3. Step 3: Cross multiply
    15,122.38x = 20,863.35 × 9,151.87
  4. Step 4: Simplify right side
    15,122.38x = 190,938,666.96
  5. Step 5: Solve for x
    x = 190,938,666.96/15,122.38
  6. Step 6: Final answer
    x = 12,626.23

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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.