Home / 12,157.28-18,235.91-3,838.13

Finding the Fourth Proportional to 12,157.28, 18,235.91 and 3,838.13

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Solution

The fourth proportional to 12,157.28, 18,235.91 and 3,838.13 is: 5,757.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,157.28 : 18,235.91 = 3,838.13 : x
  2. Step 2: Convert to fraction form
    12,157.28/18,235.91 = 3,838.13/x
  3. Step 3: Cross multiply
    12,157.28x = 18,235.91 × 3,838.13
  4. Step 4: Simplify right side
    12,157.28x = 69,991,793.25
  5. Step 5: Solve for x
    x = 69,991,793.25/12,157.28
  6. Step 6: Final answer
    x = 5,757.19

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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.