Home / 15,500.97-21,391.23-8,427.39

Finding the Fourth Proportional to 15,500.97, 21,391.23 and 8,427.39

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Solution

The fourth proportional to 15,500.97, 21,391.23 and 8,427.39 is: 11,629.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.97 : 21,391.23 = 8,427.39 : x
  2. Step 2: Convert to fraction form
    15,500.97/21,391.23 = 8,427.39/x
  3. Step 3: Cross multiply
    15,500.97x = 21,391.23 × 8,427.39
  4. Step 4: Simplify right side
    15,500.97x = 180,272,181.88
  5. Step 5: Solve for x
    x = 180,272,181.88/15,500.97
  6. Step 6: Final answer
    x = 11,629.74

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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.