Home / 25,982.80-38,974.20-8,454.40

Finding the Fourth Proportional to 25,982.80, 38,974.20 and 8,454.40

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Solution

The fourth proportional to 25,982.80, 38,974.20 and 8,454.40 is: 12,681.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,982.80 : 38,974.20 = 8,454.40 : x
  2. Step 2: Convert to fraction form
    25,982.80/38,974.20 = 8,454.40/x
  3. Step 3: Cross multiply
    25,982.80x = 38,974.20 × 8,454.40
  4. Step 4: Simplify right side
    25,982.80x = 329,503,476.48
  5. Step 5: Solve for x
    x = 329,503,476.48/25,982.80
  6. Step 6: Final answer
    x = 12,681.60

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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.