Home / 21,339.70-29,448.33-11,908.06

Finding the Fourth Proportional to 21,339.70, 29,448.33 and 11,908.06

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Solution

The fourth proportional to 21,339.70, 29,448.33 and 11,908.06 is: 16,432.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.70 : 29,448.33 = 11,908.06 : x
  2. Step 2: Convert to fraction form
    21,339.70/29,448.33 = 11,908.06/x
  3. Step 3: Cross multiply
    21,339.70x = 29,448.33 × 11,908.06
  4. Step 4: Simplify right side
    21,339.70x = 350,672,480.54
  5. Step 5: Solve for x
    x = 350,672,480.54/21,339.70
  6. Step 6: Final answer
    x = 16,432.87

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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.