Home / 25,815.68-38,715.04-8,281.36

Finding the Fourth Proportional to 25,815.68, 38,715.04 and 8,281.36

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Solution

The fourth proportional to 25,815.68, 38,715.04 and 8,281.36 is: 12,419.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,815.68 : 38,715.04 = 8,281.36 : x
  2. Step 2: Convert to fraction form
    25,815.68/38,715.04 = 8,281.36/x
  3. Step 3: Cross multiply
    25,815.68x = 38,715.04 × 8,281.36
  4. Step 4: Simplify right side
    25,815.68x = 320,613,183.65
  5. Step 5: Solve for x
    x = 320,613,183.65/25,815.68
  6. Step 6: Final answer
    x = 12,419.32

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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.