Home / 13,171.80-18,177.30-7,867.08

Finding the Fourth Proportional to 13,171.80, 18,177.30 and 7,867.08

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Solution

The fourth proportional to 13,171.80, 18,177.30 and 7,867.08 is: 10,856.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.80 : 18,177.30 = 7,867.08 : x
  2. Step 2: Convert to fraction form
    13,171.80/18,177.30 = 7,867.08/x
  3. Step 3: Cross multiply
    13,171.80x = 18,177.30 × 7,867.08
  4. Step 4: Simplify right side
    13,171.80x = 143,002,273.28
  5. Step 5: Solve for x
    x = 143,002,273.28/13,171.80
  6. Step 6: Final answer
    x = 10,856.70

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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.