Home / 21,148.11-29,184.33-12,195.60

Finding the Fourth Proportional to 21,148.11, 29,184.33 and 12,195.60

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Solution

The fourth proportional to 21,148.11, 29,184.33 and 12,195.60 is: 16,829.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,148.11 : 29,184.33 = 12,195.60 : x
  2. Step 2: Convert to fraction form
    21,148.11/29,184.33 = 12,195.60/x
  3. Step 3: Cross multiply
    21,148.11x = 29,184.33 × 12,195.60
  4. Step 4: Simplify right side
    21,148.11x = 355,920,414.95
  5. Step 5: Solve for x
    x = 355,920,414.95/21,148.11
  6. Step 6: Final answer
    x = 16,829.89

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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.