Home / 11,287.49-16,931.40-3,388.32

Finding the Fourth Proportional to 11,287.49, 16,931.40 and 3,388.32

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Solution

The fourth proportional to 11,287.49, 16,931.40 and 3,388.32 is: 5,082.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,287.49 : 16,931.40 = 3,388.32 : x
  2. Step 2: Convert to fraction form
    11,287.49/16,931.40 = 3,388.32/x
  3. Step 3: Cross multiply
    11,287.49x = 16,931.40 × 3,388.32
  4. Step 4: Simplify right side
    11,287.49x = 57,368,993.32
  5. Step 5: Solve for x
    x = 57,368,993.32/11,287.49
  6. Step 6: Final answer
    x = 5,082.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.