Home / 31,429.12-47,151.68-9,243.28

Finding the Fourth Proportional to 31,429.12, 47,151.68 and 9,243.28

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Solution

The fourth proportional to 31,429.12, 47,151.68 and 9,243.28 is: 13,867.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,429.12 : 47,151.68 = 9,243.28 : x
  2. Step 2: Convert to fraction form
    31,429.12/47,151.68 = 9,243.28/x
  3. Step 3: Cross multiply
    31,429.12x = 47,151.68 × 9,243.28
  4. Step 4: Simplify right side
    31,429.12x = 435,836,180.71
  5. Step 5: Solve for x
    x = 435,836,180.71/31,429.12
  6. Step 6: Final answer
    x = 13,867.27

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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.