Home / 18,789.26-28,145.60-8,898.55

Finding the Fourth Proportional to 18,789.26, 28,145.60 and 8,898.55

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Solution

The fourth proportional to 18,789.26, 28,145.60 and 8,898.55 is: 13,329.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,789.26 : 28,145.60 = 8,898.55 : x
  2. Step 2: Convert to fraction form
    18,789.26/28,145.60 = 8,898.55/x
  3. Step 3: Cross multiply
    18,789.26x = 28,145.60 × 8,898.55
  4. Step 4: Simplify right side
    18,789.26x = 250,454,914.02
  5. Step 5: Solve for x
    x = 250,454,914.02/18,789.26
  6. Step 6: Final answer
    x = 13,329.69

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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.