Home / 21,210.22-29,269.92-11,778.13

Finding the Fourth Proportional to 21,210.22, 29,269.92 and 11,778.13

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Solution

The fourth proportional to 21,210.22, 29,269.92 and 11,778.13 is: 16,253.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.22 : 29,269.92 = 11,778.13 : x
  2. Step 2: Convert to fraction form
    21,210.22/29,269.92 = 11,778.13/x
  3. Step 3: Cross multiply
    21,210.22x = 29,269.92 × 11,778.13
  4. Step 4: Simplify right side
    21,210.22x = 344,744,922.85
  5. Step 5: Solve for x
    x = 344,744,922.85/21,210.22
  6. Step 6: Final answer
    x = 16,253.72

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1.5x scale

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.