Home / 12,228.26-18,343.40-3,909.46

Finding the Fourth Proportional to 12,228.26, 18,343.40 and 3,909.46

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Solution

The fourth proportional to 12,228.26, 18,343.40 and 3,909.46 is: 5,864.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.26 : 18,343.40 = 3,909.46 : x
  2. Step 2: Convert to fraction form
    12,228.26/18,343.40 = 3,909.46/x
  3. Step 3: Cross multiply
    12,228.26x = 18,343.40 × 3,909.46
  4. Step 4: Simplify right side
    12,228.26x = 71,712,788.56
  5. Step 5: Solve for x
    x = 71,712,788.56/12,228.26
  6. Step 6: Final answer
    x = 5,864.51

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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.