Home / 20,116.08-30,134.84-13,169.52

Finding the Fourth Proportional to 20,116.08, 30,134.84 and 13,169.52

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Solution

The fourth proportional to 20,116.08, 30,134.84 and 13,169.52 is: 19,728.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.08 : 30,134.84 = 13,169.52 : x
  2. Step 2: Convert to fraction form
    20,116.08/30,134.84 = 13,169.52/x
  3. Step 3: Cross multiply
    20,116.08x = 30,134.84 × 13,169.52
  4. Step 4: Simplify right side
    20,116.08x = 396,861,378.08
  5. Step 5: Solve for x
    x = 396,861,378.08/20,116.08
  6. Step 6: Final answer
    x = 19,728.56

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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.