Home / 10,990.45-15,166.78-5,954.72

Finding the Fourth Proportional to 10,990.45, 15,166.78 and 5,954.72

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Solution

The fourth proportional to 10,990.45, 15,166.78 and 5,954.72 is: 8,217.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.45 : 15,166.78 = 5,954.72 : x
  2. Step 2: Convert to fraction form
    10,990.45/15,166.78 = 5,954.72/x
  3. Step 3: Cross multiply
    10,990.45x = 15,166.78 × 5,954.72
  4. Step 4: Simplify right side
    10,990.45x = 90,313,837.48
  5. Step 5: Solve for x
    x = 90,313,837.48/10,990.45
  6. Step 6: Final answer
    x = 8,217.48

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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.