Home / 26,489.78-39,740.52-8,719.72

Finding the Fourth Proportional to 26,489.78, 39,740.52 and 8,719.72

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Solution

The fourth proportional to 26,489.78, 39,740.52 and 8,719.72 is: 13,081.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,489.78 : 39,740.52 = 8,719.72 : x
  2. Step 2: Convert to fraction form
    26,489.78/39,740.52 = 8,719.72/x
  3. Step 3: Cross multiply
    26,489.78x = 39,740.52 × 8,719.72
  4. Step 4: Simplify right side
    26,489.78x = 346,526,169.05
  5. Step 5: Solve for x
    x = 346,526,169.05/26,489.78
  6. Step 6: Final answer
    x = 13,081.51

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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.