Home / 25,715.48-38,575.98-8,181.20

Finding the Fourth Proportional to 25,715.48, 38,575.98 and 8,181.20

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Solution

The fourth proportional to 25,715.48, 38,575.98 and 8,181.20 is: 12,272.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,715.48 : 38,575.98 = 8,181.20 : x
  2. Step 2: Convert to fraction form
    25,715.48/38,575.98 = 8,181.20/x
  3. Step 3: Cross multiply
    25,715.48x = 38,575.98 × 8,181.20
  4. Step 4: Simplify right side
    25,715.48x = 315,597,904.02
  5. Step 5: Solve for x
    x = 315,597,904.02/25,715.48
  6. Step 6: Final answer
    x = 12,272.68

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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.