Home / 17,715.78-26,565.71-5,231.45

Finding the Fourth Proportional to 17,715.78, 26,565.71 and 5,231.45

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Solution

The fourth proportional to 17,715.78, 26,565.71 and 5,231.45 is: 7,844.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,715.78 : 26,565.71 = 5,231.45 : x
  2. Step 2: Convert to fraction form
    17,715.78/26,565.71 = 5,231.45/x
  3. Step 3: Cross multiply
    17,715.78x = 26,565.71 × 5,231.45
  4. Step 4: Simplify right side
    17,715.78x = 138,977,223.84
  5. Step 5: Solve for x
    x = 138,977,223.84/17,715.78
  6. Step 6: Final answer
    x = 7,844.83

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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.