Home / 18,988.42-28,488.39-13,452.47

Finding the Fourth Proportional to 18,988.42, 28,488.39 and 13,452.47

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Solution

The fourth proportional to 18,988.42, 28,488.39 and 13,452.47 is: 20,182.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.42 : 28,488.39 = 13,452.47 : x
  2. Step 2: Convert to fraction form
    18,988.42/28,488.39 = 13,452.47/x
  3. Step 3: Cross multiply
    18,988.42x = 28,488.39 × 13,452.47
  4. Step 4: Simplify right side
    18,988.42x = 383,239,211.82
  5. Step 5: Solve for x
    x = 383,239,211.82/18,988.42
  6. Step 6: Final answer
    x = 20,182.79

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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.