Home / 12,193.38-18,288.45-3,429.18

Finding the Fourth Proportional to 12,193.38, 18,288.45 and 3,429.18

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Solution

The fourth proportional to 12,193.38, 18,288.45 and 3,429.18 is: 5,143.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,193.38 : 18,288.45 = 3,429.18 : x
  2. Step 2: Convert to fraction form
    12,193.38/18,288.45 = 3,429.18/x
  3. Step 3: Cross multiply
    12,193.38x = 18,288.45 × 3,429.18
  4. Step 4: Simplify right side
    12,193.38x = 62,714,386.97
  5. Step 5: Solve for x
    x = 62,714,386.97/12,193.38
  6. Step 6: Final answer
    x = 5,143.31

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1.5x scale

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.