Home / 21,324.62-31,987.40-16,945.16

Finding the Fourth Proportional to 21,324.62, 31,987.40 and 16,945.16

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Solution

The fourth proportional to 21,324.62, 31,987.40 and 16,945.16 is: 25,418.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.62 : 31,987.40 = 16,945.16 : x
  2. Step 2: Convert to fraction form
    21,324.62/31,987.40 = 16,945.16/x
  3. Step 3: Cross multiply
    21,324.62x = 31,987.40 × 16,945.16
  4. Step 4: Simplify right side
    21,324.62x = 542,031,610.98
  5. Step 5: Solve for x
    x = 542,031,610.98/21,324.62
  6. Step 6: Final answer
    x = 25,418.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.