Home / 18,965.29-28,451.58-5,815.36

Finding the Fourth Proportional to 18,965.29, 28,451.58 and 5,815.36

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Solution

The fourth proportional to 18,965.29, 28,451.58 and 5,815.36 is: 8,724.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.29 : 28,451.58 = 5,815.36 : x
  2. Step 2: Convert to fraction form
    18,965.29/28,451.58 = 5,815.36/x
  3. Step 3: Cross multiply
    18,965.29x = 28,451.58 × 5,815.36
  4. Step 4: Simplify right side
    18,965.29x = 165,456,180.27
  5. Step 5: Solve for x
    x = 165,456,180.27/18,965.29
  6. Step 6: Final answer
    x = 8,724.16

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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.