Home / 13,319.40-20,008.80-11,132.40

Finding the Fourth Proportional to 13,319.40, 20,008.80 and 11,132.40

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Solution

The fourth proportional to 13,319.40, 20,008.80 and 11,132.40 is: 16,723.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.40 : 20,008.80 = 11,132.40 : x
  2. Step 2: Convert to fraction form
    13,319.40/20,008.80 = 11,132.40/x
  3. Step 3: Cross multiply
    13,319.40x = 20,008.80 × 11,132.40
  4. Step 4: Simplify right side
    13,319.40x = 222,745,965.12
  5. Step 5: Solve for x
    x = 222,745,965.12/13,319.40
  6. Step 6: Final answer
    x = 16,723.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.