Home / 13,180.08-18,188.78-7,211.75

Finding the Fourth Proportional to 13,180.08, 18,188.78 and 7,211.75

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Solution

The fourth proportional to 13,180.08, 18,188.78 and 7,211.75 is: 9,952.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,180.08 : 18,188.78 = 7,211.75 : x
  2. Step 2: Convert to fraction form
    13,180.08/18,188.78 = 7,211.75/x
  3. Step 3: Cross multiply
    13,180.08x = 18,188.78 × 7,211.75
  4. Step 4: Simplify right side
    13,180.08x = 131,172,934.17
  5. Step 5: Solve for x
    x = 131,172,934.17/13,180.08
  6. Step 6: Final answer
    x = 9,952.36

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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.