Home / 18,429.30-25,425.21-11,343.42

Finding the Fourth Proportional to 18,429.30, 25,425.21 and 11,343.42

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Solution

The fourth proportional to 18,429.30, 25,425.21 and 11,343.42 is: 15,649.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,429.30 : 25,425.21 = 11,343.42 : x
  2. Step 2: Convert to fraction form
    18,429.30/25,425.21 = 11,343.42/x
  3. Step 3: Cross multiply
    18,429.30x = 25,425.21 × 11,343.42
  4. Step 4: Simplify right side
    18,429.30x = 288,408,835.62
  5. Step 5: Solve for x
    x = 288,408,835.62/18,429.30
  6. Step 6: Final answer
    x = 15,649.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.