Home / 13,145.38-19,721.19-4,260.71

Finding the Fourth Proportional to 13,145.38, 19,721.19 and 4,260.71

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Solution

The fourth proportional to 13,145.38, 19,721.19 and 4,260.71 is: 6,392.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.38 : 19,721.19 = 4,260.71 : x
  2. Step 2: Convert to fraction form
    13,145.38/19,721.19 = 4,260.71/x
  3. Step 3: Cross multiply
    13,145.38x = 19,721.19 × 4,260.71
  4. Step 4: Simplify right side
    13,145.38x = 84,026,336.73
  5. Step 5: Solve for x
    x = 84,026,336.73/13,145.38
  6. Step 6: Final answer
    x = 6,392.08

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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.