Home / 18,789.08-28,155.60-17,129.36

Finding the Fourth Proportional to 18,789.08, 28,155.60 and 17,129.36

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Solution

The fourth proportional to 18,789.08, 28,155.60 and 17,129.36 is: 25,668.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,789.08 : 28,155.60 = 17,129.36 : x
  2. Step 2: Convert to fraction form
    18,789.08/28,155.60 = 17,129.36/x
  3. Step 3: Cross multiply
    18,789.08x = 28,155.60 × 17,129.36
  4. Step 4: Simplify right side
    18,789.08x = 482,287,408.42
  5. Step 5: Solve for x
    x = 482,287,408.42/18,789.08
  6. Step 6: Final answer
    x = 25,668.50

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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.