Home / 21,294.62-29,386.88-12,221.46

Finding the Fourth Proportional to 21,294.62, 29,386.88 and 12,221.46

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Solution

The fourth proportional to 21,294.62, 29,386.88 and 12,221.46 is: 16,865.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294.62 : 29,386.88 = 12,221.46 : x
  2. Step 2: Convert to fraction form
    21,294.62/29,386.88 = 12,221.46/x
  3. Step 3: Cross multiply
    21,294.62x = 29,386.88 × 12,221.46
  4. Step 4: Simplify right side
    21,294.62x = 359,150,578.44
  5. Step 5: Solve for x
    x = 359,150,578.44/21,294.62
  6. Step 6: Final answer
    x = 16,865.79

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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.