Home / 21,535.38-29,715.75-11,974.59

Finding the Fourth Proportional to 21,535.38, 29,715.75 and 11,974.59

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Solution

The fourth proportional to 21,535.38, 29,715.75 and 11,974.59 is: 16,523.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,535.38 : 29,715.75 = 11,974.59 : x
  2. Step 2: Convert to fraction form
    21,535.38/29,715.75 = 11,974.59/x
  3. Step 3: Cross multiply
    21,535.38x = 29,715.75 × 11,974.59
  4. Step 4: Simplify right side
    21,535.38x = 355,833,922.79
  5. Step 5: Solve for x
    x = 355,833,922.79/21,535.38
  6. Step 6: Final answer
    x = 16,523.22

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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.