Home / 20,109.62-30,125.19-13,163.06

Finding the Fourth Proportional to 20,109.62, 30,125.19 and 13,163.06

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Solution

The fourth proportional to 20,109.62, 30,125.19 and 13,163.06 is: 19,718.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.62 : 30,125.19 = 13,163.06 : x
  2. Step 2: Convert to fraction form
    20,109.62/30,125.19 = 13,163.06/x
  3. Step 3: Cross multiply
    20,109.62x = 30,125.19 × 13,163.06
  4. Step 4: Simplify right side
    20,109.62x = 396,539,808.16
  5. Step 5: Solve for x
    x = 396,539,808.16/20,109.62
  6. Step 6: Final answer
    x = 19,718.91

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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.