Home / 23,150.78-31,947.96-12,540.44

Finding the Fourth Proportional to 23,150.78, 31,947.96 and 12,540.44

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Solution

The fourth proportional to 23,150.78, 31,947.96 and 12,540.44 is: 17,305.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,150.78 : 31,947.96 = 12,540.44 : x
  2. Step 2: Convert to fraction form
    23,150.78/31,947.96 = 12,540.44/x
  3. Step 3: Cross multiply
    23,150.78x = 31,947.96 × 12,540.44
  4. Step 4: Simplify right side
    23,150.78x = 400,641,475.50
  5. Step 5: Solve for x
    x = 400,641,475.50/23,150.78
  6. Step 6: Final answer
    x = 17,305.74

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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.