Home / 25,981.65-38,976.57-8,447.38

Finding the Fourth Proportional to 25,981.65, 38,976.57 and 8,447.38

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Solution

The fourth proportional to 25,981.65, 38,976.57 and 8,447.38 is: 12,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,981.65 : 38,976.57 = 8,447.38 : x
  2. Step 2: Convert to fraction form
    25,981.65/38,976.57 = 8,447.38/x
  3. Step 3: Cross multiply
    25,981.65x = 38,976.57 × 8,447.38
  4. Step 4: Simplify right side
    25,981.65x = 329,249,800.45
  5. Step 5: Solve for x
    x = 329,249,800.45/25,981.65
  6. Step 6: Final answer
    x = 12,672.40

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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.