Home / 12,126.28-18,189.40-3,807.03

Finding the Fourth Proportional to 12,126.28, 18,189.40 and 3,807.03

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Solution

The fourth proportional to 12,126.28, 18,189.40 and 3,807.03 is: 5,710.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.28 : 18,189.40 = 3,807.03 : x
  2. Step 2: Convert to fraction form
    12,126.28/18,189.40 = 3,807.03/x
  3. Step 3: Cross multiply
    12,126.28x = 18,189.40 × 3,807.03
  4. Step 4: Simplify right side
    12,126.28x = 69,247,591.48
  5. Step 5: Solve for x
    x = 69,247,591.48/12,126.28
  6. Step 6: Final answer
    x = 5,710.54

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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.