Home / 21,766.82-30,034.88-12,207.20

Finding the Fourth Proportional to 21,766.82, 30,034.88 and 12,207.20

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Solution

The fourth proportional to 21,766.82, 30,034.88 and 12,207.20 is: 16,844.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,766.82 : 30,034.88 = 12,207.20 : x
  2. Step 2: Convert to fraction form
    21,766.82/30,034.88 = 12,207.20/x
  3. Step 3: Cross multiply
    21,766.82x = 30,034.88 × 12,207.20
  4. Step 4: Simplify right side
    21,766.82x = 366,641,787.14
  5. Step 5: Solve for x
    x = 366,641,787.14/21,766.82
  6. Step 6: Final answer
    x = 16,844.07

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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.