Home / 12,979.20-17,867.25-11,652.42

Finding the Fourth Proportional to 12,979.20, 17,867.25 and 11,652.42

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Solution

The fourth proportional to 12,979.20, 17,867.25 and 11,652.42 is: 16,040.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979.20 : 17,867.25 = 11,652.42 : x
  2. Step 2: Convert to fraction form
    12,979.20/17,867.25 = 11,652.42/x
  3. Step 3: Cross multiply
    12,979.20x = 17,867.25 × 11,652.42
  4. Step 4: Simplify right side
    12,979.20x = 208,196,701.25
  5. Step 5: Solve for x
    x = 208,196,701.25/12,979.20
  6. Step 6: Final answer
    x = 16,040.80

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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.