Home / 15,398.40-21,249.72-8,324.80

Finding the Fourth Proportional to 15,398.40, 21,249.72 and 8,324.80

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Solution

The fourth proportional to 15,398.40, 21,249.72 and 8,324.80 is: 11,488.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,398.40 : 21,249.72 = 8,324.80 : x
  2. Step 2: Convert to fraction form
    15,398.40/21,249.72 = 8,324.80/x
  3. Step 3: Cross multiply
    15,398.40x = 21,249.72 × 8,324.80
  4. Step 4: Simplify right side
    15,398.40x = 176,899,669.06
  5. Step 5: Solve for x
    x = 176,899,669.06/15,398.40
  6. Step 6: Final answer
    x = 11,488.19

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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.