Home / 21,535.76-29,721.22-12,104.38

Finding the Fourth Proportional to 21,535.76, 29,721.22 and 12,104.38

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Solution

The fourth proportional to 21,535.76, 29,721.22 and 12,104.38 is: 16,705.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,535.76 : 29,721.22 = 12,104.38 : x
  2. Step 2: Convert to fraction form
    21,535.76/29,721.22 = 12,104.38/x
  3. Step 3: Cross multiply
    21,535.76x = 29,721.22 × 12,104.38
  4. Step 4: Simplify right side
    21,535.76x = 359,756,940.94
  5. Step 5: Solve for x
    x = 359,756,940.94/21,535.76
  6. Step 6: Final answer
    x = 16,705.10

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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.