Home / 20,764.88-31,158.26-9,086.30

Finding the Fourth Proportional to 20,764.88, 31,158.26 and 9,086.30

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Solution

The fourth proportional to 20,764.88, 31,158.26 and 9,086.30 is: 13,634.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.88 : 31,158.26 = 9,086.30 : x
  2. Step 2: Convert to fraction form
    20,764.88/31,158.26 = 9,086.30/x
  3. Step 3: Cross multiply
    20,764.88x = 31,158.26 × 9,086.30
  4. Step 4: Simplify right side
    20,764.88x = 283,113,297.84
  5. Step 5: Solve for x
    x = 283,113,297.84/20,764.88
  6. Step 6: Final answer
    x = 13,634.24

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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.