Home / 17,118.56-25,680-5,427.60

Finding the Fourth Proportional to 17,118.56, 25,680 and 5,427.60

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Solution

The fourth proportional to 17,118.56, 25,680 and 5,427.60 is: 8,142.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,118.56 : 25,680 = 5,427.60 : x
  2. Step 2: Convert to fraction form
    17,118.56/25,680 = 5,427.60/x
  3. Step 3: Cross multiply
    17,118.56x = 25,680 × 5,427.60
  4. Step 4: Simplify right side
    17,118.56x = 139,380,768
  5. Step 5: Solve for x
    x = 139,380,768/17,118.56
  6. Step 6: Final answer
    x = 8,142.08

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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.