Home / 25,878.30-38,778.98-13,381.65

Finding the Fourth Proportional to 25,878.30, 38,778.98 and 13,381.65

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Solution

The fourth proportional to 25,878.30, 38,778.98 and 13,381.65 is: 20,052.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,878.30 : 38,778.98 = 13,381.65 : x
  2. Step 2: Convert to fraction form
    25,878.30/38,778.98 = 13,381.65/x
  3. Step 3: Cross multiply
    25,878.30x = 38,778.98 × 13,381.65
  4. Step 4: Simplify right side
    25,878.30x = 518,926,765.86
  5. Step 5: Solve for x
    x = 518,926,765.86/25,878.30
  6. Step 6: Final answer
    x = 20,052.58

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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.