Home / 25,344.20-38,040.60-12,878.30

Finding the Fourth Proportional to 25,344.20, 38,040.60 and 12,878.30

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Solution

The fourth proportional to 25,344.20, 38,040.60 and 12,878.30 is: 19,329.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,344.20 : 38,040.60 = 12,878.30 : x
  2. Step 2: Convert to fraction form
    25,344.20/38,040.60 = 12,878.30/x
  3. Step 3: Cross multiply
    25,344.20x = 38,040.60 × 12,878.30
  4. Step 4: Simplify right side
    25,344.20x = 489,898,258.98
  5. Step 5: Solve for x
    x = 489,898,258.98/25,344.20
  6. Step 6: Final answer
    x = 19,329.80

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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.