Home / 21,290.24-31,939.14-7,249.56

Finding the Fourth Proportional to 21,290.24, 31,939.14 and 7,249.56

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Solution

The fourth proportional to 21,290.24, 31,939.14 and 7,249.56 is: 10,875.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,290.24 : 31,939.14 = 7,249.56 : x
  2. Step 2: Convert to fraction form
    21,290.24/31,939.14 = 7,249.56/x
  3. Step 3: Cross multiply
    21,290.24x = 31,939.14 × 7,249.56
  4. Step 4: Simplify right side
    21,290.24x = 231,544,711.78
  5. Step 5: Solve for x
    x = 231,544,711.78/21,290.24
  6. Step 6: Final answer
    x = 10,875.63

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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.