Home / 10,990.36-15,166.68-5,954.71

Finding the Fourth Proportional to 10,990.36, 15,166.68 and 5,954.71

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Solution

The fourth proportional to 10,990.36, 15,166.68 and 5,954.71 is: 8,217.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.36 : 15,166.68 = 5,954.71 : x
  2. Step 2: Convert to fraction form
    10,990.36/15,166.68 = 5,954.71/x
  3. Step 3: Cross multiply
    10,990.36x = 15,166.68 × 5,954.71
  4. Step 4: Simplify right side
    10,990.36x = 90,313,181.06
  5. Step 5: Solve for x
    x = 90,313,181.06/10,990.36
  6. Step 6: Final answer
    x = 8,217.49

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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.