Home / 21,641.10-29,865.61-12,209.62

Finding the Fourth Proportional to 21,641.10, 29,865.61 and 12,209.62

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Solution

The fourth proportional to 21,641.10, 29,865.61 and 12,209.62 is: 16,849.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,641.10 : 29,865.61 = 12,209.62 : x
  2. Step 2: Convert to fraction form
    21,641.10/29,865.61 = 12,209.62/x
  3. Step 3: Cross multiply
    21,641.10x = 29,865.61 × 12,209.62
  4. Step 4: Simplify right side
    21,641.10x = 364,647,749.17
  5. Step 5: Solve for x
    x = 364,647,749.17/21,641.10
  6. Step 6: Final answer
    x = 16,849.78

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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.