Home / 13,182.08-18,191.10-7,213.64

Finding the Fourth Proportional to 13,182.08, 18,191.10 and 7,213.64

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Solution

The fourth proportional to 13,182.08, 18,191.10 and 7,213.64 is: 9,954.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,182.08 : 18,191.10 = 7,213.64 : x
  2. Step 2: Convert to fraction form
    13,182.08/18,191.10 = 7,213.64/x
  3. Step 3: Cross multiply
    13,182.08x = 18,191.10 × 7,213.64
  4. Step 4: Simplify right side
    13,182.08x = 131,224,046.60
  5. Step 5: Solve for x
    x = 131,224,046.60/13,182.08
  6. Step 6: Final answer
    x = 9,954.73

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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.