Home / 21,198.81-29,254.49-11,639.11

Finding the Fourth Proportional to 21,198.81, 29,254.49 and 11,639.11

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Solution

The fourth proportional to 21,198.81, 29,254.49 and 11,639.11 is: 16,062.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.81 : 29,254.49 = 11,639.11 : x
  2. Step 2: Convert to fraction form
    21,198.81/29,254.49 = 11,639.11/x
  3. Step 3: Cross multiply
    21,198.81x = 29,254.49 × 11,639.11
  4. Step 4: Simplify right side
    21,198.81x = 340,496,215.06
  5. Step 5: Solve for x
    x = 340,496,215.06/21,198.81
  6. Step 6: Final answer
    x = 16,062.05

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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.