Home / 20,215.36-30,304.56-17,115.34

Finding the Fourth Proportional to 20,215.36, 30,304.56 and 17,115.34

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Solution

The fourth proportional to 20,215.36, 30,304.56 and 17,115.34 is: 25,657.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.36 : 30,304.56 = 17,115.34 : x
  2. Step 2: Convert to fraction form
    20,215.36/30,304.56 = 17,115.34/x
  3. Step 3: Cross multiply
    20,215.36x = 30,304.56 × 17,115.34
  4. Step 4: Simplify right side
    20,215.36x = 518,672,847.95
  5. Step 5: Solve for x
    x = 518,672,847.95/20,215.36
  6. Step 6: Final answer
    x = 25,657.36

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1.5x scale

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.