Home / 21,079.29-29,089.18-11,647.86

Finding the Fourth Proportional to 21,079.29, 29,089.18 and 11,647.86

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Solution

The fourth proportional to 21,079.29, 29,089.18 and 11,647.86 is: 16,073.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.29 : 29,089.18 = 11,647.86 : x
  2. Step 2: Convert to fraction form
    21,079.29/29,089.18 = 11,647.86/x
  3. Step 3: Cross multiply
    21,079.29x = 29,089.18 × 11,647.86
  4. Step 4: Simplify right side
    21,079.29x = 338,826,696.15
  5. Step 5: Solve for x
    x = 338,826,696.15/21,079.29
  6. Step 6: Final answer
    x = 16,073.91

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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.