Home / 21,212.04-29,273.22-12,138.96

Finding the Fourth Proportional to 21,212.04, 29,273.22 and 12,138.96

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Solution

The fourth proportional to 21,212.04, 29,273.22 and 12,138.96 is: 16,752.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.04 : 29,273.22 = 12,138.96 : x
  2. Step 2: Convert to fraction form
    21,212.04/29,273.22 = 12,138.96/x
  3. Step 3: Cross multiply
    21,212.04x = 29,273.22 × 12,138.96
  4. Step 4: Simplify right side
    21,212.04x = 355,346,446.65
  5. Step 5: Solve for x
    x = 355,346,446.65/21,212.04
  6. Step 6: Final answer
    x = 16,752.11

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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.