Home / 15,398.15-21,249.46-8,324.57

Finding the Fourth Proportional to 15,398.15, 21,249.46 and 8,324.57

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Solution

The fourth proportional to 15,398.15, 21,249.46 and 8,324.57 is: 11,487.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,398.15 : 21,249.46 = 8,324.57 : x
  2. Step 2: Convert to fraction form
    15,398.15/21,249.46 = 8,324.57/x
  3. Step 3: Cross multiply
    15,398.15x = 21,249.46 × 8,324.57
  4. Step 4: Simplify right side
    15,398.15x = 176,892,617.23
  5. Step 5: Solve for x
    x = 176,892,617.23/15,398.15
  6. Step 6: Final answer
    x = 11,487.91

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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.