Home / 28,853.43-39,786.31-18,763.14

Finding the Fourth Proportional to 28,853.43, 39,786.31 and 18,763.14

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Solution

The fourth proportional to 28,853.43, 39,786.31 and 18,763.14 is: 25,872.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,853.43 : 39,786.31 = 18,763.14 : x
  2. Step 2: Convert to fraction form
    28,853.43/39,786.31 = 18,763.14/x
  3. Step 3: Cross multiply
    28,853.43x = 39,786.31 × 18,763.14
  4. Step 4: Simplify right side
    28,853.43x = 746,516,104.61
  5. Step 5: Solve for x
    x = 746,516,104.61/28,853.43
  6. Step 6: Final answer
    x = 25,872.70

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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.