Home / 21,209.38-29,270.30-11,777.94

Finding the Fourth Proportional to 21,209.38, 29,270.30 and 11,777.94

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Solution

The fourth proportional to 21,209.38, 29,270.30 and 11,777.94 is: 16,254.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.38 : 29,270.30 = 11,777.94 : x
  2. Step 2: Convert to fraction form
    21,209.38/29,270.30 = 11,777.94/x
  3. Step 3: Cross multiply
    21,209.38x = 29,270.30 × 11,777.94
  4. Step 4: Simplify right side
    21,209.38x = 344,743,778.29
  5. Step 5: Solve for x
    x = 344,743,778.29/21,209.38
  6. Step 6: Final answer
    x = 16,254.31

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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.