Home / 11,158.56-15,399.36-6,443.28

Finding the Fourth Proportional to 11,158.56, 15,399.36 and 6,443.28

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Solution

The fourth proportional to 11,158.56, 15,399.36 and 6,443.28 is: 8,892.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,158.56 : 15,399.36 = 6,443.28 : x
  2. Step 2: Convert to fraction form
    11,158.56/15,399.36 = 6,443.28/x
  3. Step 3: Cross multiply
    11,158.56x = 15,399.36 × 6,443.28
  4. Step 4: Simplify right side
    11,158.56x = 99,222,388.30
  5. Step 5: Solve for x
    x = 99,222,388.30/11,158.56
  6. Step 6: Final answer
    x = 8,892.04

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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.