Home / 20,154.26-30,234.50-10,288.19

Finding the Fourth Proportional to 20,154.26, 30,234.50 and 10,288.19

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Solution

The fourth proportional to 20,154.26, 30,234.50 and 10,288.19 is: 15,433.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.26 : 30,234.50 = 10,288.19 : x
  2. Step 2: Convert to fraction form
    20,154.26/30,234.50 = 10,288.19/x
  3. Step 3: Cross multiply
    20,154.26x = 30,234.50 × 10,288.19
  4. Step 4: Simplify right side
    20,154.26x = 311,058,280.56
  5. Step 5: Solve for x
    x = 311,058,280.56/20,154.26
  6. Step 6: Final answer
    x = 15,433.87

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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.