Home / 15,500.88-21,391.17-8,427.24

Finding the Fourth Proportional to 15,500.88, 21,391.17 and 8,427.24

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Solution

The fourth proportional to 15,500.88, 21,391.17 and 8,427.24 is: 11,629.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.88 : 21,391.17 = 8,427.24 : x
  2. Step 2: Convert to fraction form
    15,500.88/21,391.17 = 8,427.24/x
  3. Step 3: Cross multiply
    15,500.88x = 21,391.17 × 8,427.24
  4. Step 4: Simplify right side
    15,500.88x = 180,268,523.47
  5. Step 5: Solve for x
    x = 180,268,523.47/15,500.88
  6. Step 6: Final answer
    x = 11,629.57

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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.