Home / 25,949.11-38,929.35-8,420.71

Finding the Fourth Proportional to 25,949.11, 38,929.35 and 8,420.71

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Solution

The fourth proportional to 25,949.11, 38,929.35 and 8,420.71 is: 12,632.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,949.11 : 38,929.35 = 8,420.71 : x
  2. Step 2: Convert to fraction form
    25,949.11/38,929.35 = 8,420.71/x
  3. Step 3: Cross multiply
    25,949.11x = 38,929.35 × 8,420.71
  4. Step 4: Simplify right side
    25,949.11x = 327,812,766.84
  5. Step 5: Solve for x
    x = 327,812,766.84/25,949.11
  6. Step 6: Final answer
    x = 12,632.91

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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.