Home / 25,013.40-34,517.04-13,680.78

Finding the Fourth Proportional to 25,013.40, 34,517.04 and 13,680.78

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Solution

The fourth proportional to 25,013.40, 34,517.04 and 13,680.78 is: 18,878.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,013.40 : 34,517.04 = 13,680.78 : x
  2. Step 2: Convert to fraction form
    25,013.40/34,517.04 = 13,680.78/x
  3. Step 3: Cross multiply
    25,013.40x = 34,517.04 × 13,680.78
  4. Step 4: Simplify right side
    25,013.40x = 472,220,030.49
  5. Step 5: Solve for x
    x = 472,220,030.49/25,013.40
  6. Step 6: Final answer
    x = 18,878.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.