Home / 15,540.70-23,317.94-8,143.40

Finding the Fourth Proportional to 15,540.70, 23,317.94 and 8,143.40

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Solution

The fourth proportional to 15,540.70, 23,317.94 and 8,143.40 is: 12,218.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,540.70 : 23,317.94 = 8,143.40 : x
  2. Step 2: Convert to fraction form
    15,540.70/23,317.94 = 8,143.40/x
  3. Step 3: Cross multiply
    15,540.70x = 23,317.94 × 8,143.40
  4. Step 4: Simplify right side
    15,540.70x = 189,887,258.52
  5. Step 5: Solve for x
    x = 189,887,258.52/15,540.70
  6. Step 6: Final answer
    x = 12,218.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.