Home / 15,523.20-21,427.14-9,149.58

Finding the Fourth Proportional to 15,523.20, 21,427.14 and 9,149.58

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Solution

The fourth proportional to 15,523.20, 21,427.14 and 9,149.58 is: 12,629.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,523.20 : 21,427.14 = 9,149.58 : x
  2. Step 2: Convert to fraction form
    15,523.20/21,427.14 = 9,149.58/x
  3. Step 3: Cross multiply
    15,523.20x = 21,427.14 × 9,149.58
  4. Step 4: Simplify right side
    15,523.20x = 196,049,331.60
  5. Step 5: Solve for x
    x = 196,049,331.60/15,523.20
  6. Step 6: Final answer
    x = 12,629.44

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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.