Home / 13,920.08-19,215.24-8,330

Finding the Fourth Proportional to 13,920.08, 19,215.24 and 8,330

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Solution

The fourth proportional to 13,920.08, 19,215.24 and 8,330 is: 11,498.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.08 : 19,215.24 = 8,330 : x
  2. Step 2: Convert to fraction form
    13,920.08/19,215.24 = 8,330/x
  3. Step 3: Cross multiply
    13,920.08x = 19,215.24 × 8,330
  4. Step 4: Simplify right side
    13,920.08x = 160,062,949.20
  5. Step 5: Solve for x
    x = 160,062,949.20/13,920.08
  6. Step 6: Final answer
    x = 11,498.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.