Home / 17,102.40-25,653.32-5,415.60

Finding the Fourth Proportional to 17,102.40, 25,653.32 and 5,415.60

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Solution

The fourth proportional to 17,102.40, 25,653.32 and 5,415.60 is: 8,123.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,102.40 : 25,653.32 = 5,415.60 : x
  2. Step 2: Convert to fraction form
    17,102.40/25,653.32 = 5,415.60/x
  3. Step 3: Cross multiply
    17,102.40x = 25,653.32 × 5,415.60
  4. Step 4: Simplify right side
    17,102.40x = 138,928,119.79
  5. Step 5: Solve for x
    x = 138,928,119.79/17,102.40
  6. Step 6: Final answer
    x = 8,123.31

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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.