Home / 20,143.80-30,226.05-15,243.48

Finding the Fourth Proportional to 20,143.80, 30,226.05 and 15,243.48

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Solution

The fourth proportional to 20,143.80, 30,226.05 and 15,243.48 is: 22,873.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.80 : 30,226.05 = 15,243.48 : x
  2. Step 2: Convert to fraction form
    20,143.80/30,226.05 = 15,243.48/x
  3. Step 3: Cross multiply
    20,143.80x = 30,226.05 × 15,243.48
  4. Step 4: Simplify right side
    20,143.80x = 460,750,188.65
  5. Step 5: Solve for x
    x = 460,750,188.65/20,143.80
  6. Step 6: Final answer
    x = 22,873.05

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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.