Home / 18,428.30-25,423.83-11,342.42

Finding the Fourth Proportional to 18,428.30, 25,423.83 and 11,342.42

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Solution

The fourth proportional to 18,428.30, 25,423.83 and 11,342.42 is: 15,648.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,428.30 : 25,423.83 = 11,342.42 : x
  2. Step 2: Convert to fraction form
    18,428.30/25,423.83 = 11,342.42/x
  3. Step 3: Cross multiply
    18,428.30x = 25,423.83 × 11,342.42
  4. Step 4: Simplify right side
    18,428.30x = 288,367,630.75
  5. Step 5: Solve for x
    x = 288,367,630.75/18,428.30
  6. Step 6: Final answer
    x = 15,648.09

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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.