Home / 21,243.31-29,315.27-11,552.51

Finding the Fourth Proportional to 21,243.31, 29,315.27 and 11,552.51

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Solution

The fourth proportional to 21,243.31, 29,315.27 and 11,552.51 is: 15,942.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.31 : 29,315.27 = 11,552.51 : x
  2. Step 2: Convert to fraction form
    21,243.31/29,315.27 = 11,552.51/x
  3. Step 3: Cross multiply
    21,243.31x = 29,315.27 × 11,552.51
  4. Step 4: Simplify right side
    21,243.31x = 338,664,945.79
  5. Step 5: Solve for x
    x = 338,664,945.79/21,243.31
  6. Step 6: Final answer
    x = 15,942.19

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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.