Home / 15,451.92-21,324.56-8,738.15

Finding the Fourth Proportional to 15,451.92, 21,324.56 and 8,738.15

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Solution

The fourth proportional to 15,451.92, 21,324.56 and 8,738.15 is: 12,059.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,451.92 : 21,324.56 = 8,738.15 : x
  2. Step 2: Convert to fraction form
    15,451.92/21,324.56 = 8,738.15/x
  3. Step 3: Cross multiply
    15,451.92x = 21,324.56 × 8,738.15
  4. Step 4: Simplify right side
    15,451.92x = 186,337,053.65
  5. Step 5: Solve for x
    x = 186,337,053.65/15,451.92
  6. Step 6: Final answer
    x = 12,059.15

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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.