Home / 10,936.40-16,393.40-5,381.20

Finding the Fourth Proportional to 10,936.40, 16,393.40 and 5,381.20

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Solution

The fourth proportional to 10,936.40, 16,393.40 and 5,381.20 is: 8,066.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,936.40 : 16,393.40 = 5,381.20 : x
  2. Step 2: Convert to fraction form
    10,936.40/16,393.40 = 5,381.20/x
  3. Step 3: Cross multiply
    10,936.40x = 16,393.40 × 5,381.20
  4. Step 4: Simplify right side
    10,936.40x = 88,216,164.08
  5. Step 5: Solve for x
    x = 88,216,164.08/10,936.40
  6. Step 6: Final answer
    x = 8,066.29

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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.