Home / 21,122.67-29,148.85-11,562.33

Finding the Fourth Proportional to 21,122.67, 29,148.85 and 11,562.33

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Solution

The fourth proportional to 21,122.67, 29,148.85 and 11,562.33 is: 15,955.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,122.67 : 29,148.85 = 11,562.33 : x
  2. Step 2: Convert to fraction form
    21,122.67/29,148.85 = 11,562.33/x
  3. Step 3: Cross multiply
    21,122.67x = 29,148.85 × 11,562.33
  4. Step 4: Simplify right side
    21,122.67x = 337,028,622.82
  5. Step 5: Solve for x
    x = 337,028,622.82/21,122.67
  6. Step 6: Final answer
    x = 15,955.78

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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.