Home / 21,280.38-29,365.11-11,849.82

Finding the Fourth Proportional to 21,280.38, 29,365.11 and 11,849.82

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Solution

The fourth proportional to 21,280.38, 29,365.11 and 11,849.82 is: 16,351.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,280.38 : 29,365.11 = 11,849.82 : x
  2. Step 2: Convert to fraction form
    21,280.38/29,365.11 = 11,849.82/x
  3. Step 3: Cross multiply
    21,280.38x = 29,365.11 × 11,849.82
  4. Step 4: Simplify right side
    21,280.38x = 347,971,267.78
  5. Step 5: Solve for x
    x = 347,971,267.78/21,280.38
  6. Step 6: Final answer
    x = 16,351.74

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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.