Home / 17,811.18-26,712.81-5,331.15

Finding the Fourth Proportional to 17,811.18, 26,712.81 and 5,331.15

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Solution

The fourth proportional to 17,811.18, 26,712.81 and 5,331.15 is: 7,995.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,811.18 : 26,712.81 = 5,331.15 : x
  2. Step 2: Convert to fraction form
    17,811.18/26,712.81 = 5,331.15/x
  3. Step 3: Cross multiply
    17,811.18x = 26,712.81 × 5,331.15
  4. Step 4: Simplify right side
    17,811.18x = 142,409,997.03
  5. Step 5: Solve for x
    x = 142,409,997.03/17,811.18
  6. Step 6: Final answer
    x = 7,995.54

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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.