Home / 25,540.25-38,258.12-12,381.80

Finding the Fourth Proportional to 25,540.25, 38,258.12 and 12,381.80

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Solution

The fourth proportional to 25,540.25, 38,258.12 and 12,381.80 is: 18,547.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,540.25 : 38,258.12 = 12,381.80 : x
  2. Step 2: Convert to fraction form
    25,540.25/38,258.12 = 12,381.80/x
  3. Step 3: Cross multiply
    25,540.25x = 38,258.12 × 12,381.80
  4. Step 4: Simplify right side
    25,540.25x = 473,704,229.88
  5. Step 5: Solve for x
    x = 473,704,229.88/25,540.25
  6. Step 6: Final answer
    x = 18,547.36

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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.