Home / 25,981.47-38,976.29-8,447.19

Finding the Fourth Proportional to 25,981.47, 38,976.29 and 8,447.19

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Solution

The fourth proportional to 25,981.47, 38,976.29 and 8,447.19 is: 12,672.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,981.47 : 38,976.29 = 8,447.19 : x
  2. Step 2: Convert to fraction form
    25,981.47/38,976.29 = 8,447.19/x
  3. Step 3: Cross multiply
    25,981.47x = 38,976.29 × 8,447.19
  4. Step 4: Simplify right side
    25,981.47x = 329,240,084.89
  5. Step 5: Solve for x
    x = 329,240,084.89/25,981.47
  6. Step 6: Final answer
    x = 12,672.11

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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.