Home / 25,836.78-38,755.38-7,117.86

Finding the Fourth Proportional to 25,836.78, 38,755.38 and 7,117.86

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Solution

The fourth proportional to 25,836.78, 38,755.38 and 7,117.86 is: 10,676.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,836.78 : 38,755.38 = 7,117.86 : x
  2. Step 2: Convert to fraction form
    25,836.78/38,755.38 = 7,117.86/x
  3. Step 3: Cross multiply
    25,836.78x = 38,755.38 × 7,117.86
  4. Step 4: Simplify right side
    25,836.78x = 275,855,175.31
  5. Step 5: Solve for x
    x = 275,855,175.31/25,836.78
  6. Step 6: Final answer
    x = 10,676.84

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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.