Home / 18,878.21-28,275.63-17,134.54

Finding the Fourth Proportional to 18,878.21, 28,275.63 and 17,134.54

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Solution

The fourth proportional to 18,878.21, 28,275.63 and 17,134.54 is: 25,663.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.21 : 28,275.63 = 17,134.54 : x
  2. Step 2: Convert to fraction form
    18,878.21/28,275.63 = 17,134.54/x
  3. Step 3: Cross multiply
    18,878.21x = 28,275.63 × 17,134.54
  4. Step 4: Simplify right side
    18,878.21x = 484,489,874.70
  5. Step 5: Solve for x
    x = 484,489,874.70/18,878.21
  6. Step 6: Final answer
    x = 25,663.97

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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.