Home / 21,283.76-29,371.62-11,854.18

Finding the Fourth Proportional to 21,283.76, 29,371.62 and 11,854.18

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Solution

The fourth proportional to 21,283.76, 29,371.62 and 11,854.18 is: 16,358.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283.76 : 29,371.62 = 11,854.18 : x
  2. Step 2: Convert to fraction form
    21,283.76/29,371.62 = 11,854.18/x
  3. Step 3: Cross multiply
    21,283.76x = 29,371.62 × 11,854.18
  4. Step 4: Simplify right side
    21,283.76x = 348,176,470.37
  5. Step 5: Solve for x
    x = 348,176,470.37/21,283.76
  6. Step 6: Final answer
    x = 16,358.79

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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.