Home / 15,540.95-21,449.28-9,167.15

Finding the Fourth Proportional to 15,540.95, 21,449.28 and 9,167.15

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Solution

The fourth proportional to 15,540.95, 21,449.28 and 9,167.15 is: 12,652.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,540.95 : 21,449.28 = 9,167.15 : x
  2. Step 2: Convert to fraction form
    15,540.95/21,449.28 = 9,167.15/x
  3. Step 3: Cross multiply
    15,540.95x = 21,449.28 × 9,167.15
  4. Step 4: Simplify right side
    15,540.95x = 196,628,659.91
  5. Step 5: Solve for x
    x = 196,628,659.91/15,540.95
  6. Step 6: Final answer
    x = 12,652.30

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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.