Home / 12,228.24-18,343.38-3,909.44

Finding the Fourth Proportional to 12,228.24, 18,343.38 and 3,909.44

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Solution

The fourth proportional to 12,228.24, 18,343.38 and 3,909.44 is: 5,864.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.24 : 18,343.38 = 3,909.44 : x
  2. Step 2: Convert to fraction form
    12,228.24/18,343.38 = 3,909.44/x
  3. Step 3: Cross multiply
    12,228.24x = 18,343.38 × 3,909.44
  4. Step 4: Simplify right side
    12,228.24x = 71,712,343.51
  5. Step 5: Solve for x
    x = 71,712,343.51/12,228.24
  6. Step 6: Final answer
    x = 5,864.49

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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.