Home / 10,429.29-15,642.62-3,408.71

Finding the Fourth Proportional to 10,429.29, 15,642.62 and 3,408.71

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Solution

The fourth proportional to 10,429.29, 15,642.62 and 3,408.71 is: 5,112.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,429.29 : 15,642.62 = 3,408.71 : x
  2. Step 2: Convert to fraction form
    10,429.29/15,642.62 = 3,408.71/x
  3. Step 3: Cross multiply
    10,429.29x = 15,642.62 × 3,408.71
  4. Step 4: Simplify right side
    10,429.29x = 53,321,209.24
  5. Step 5: Solve for x
    x = 53,321,209.24/10,429.29
  6. Step 6: Final answer
    x = 5,112.64

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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.