Home / 20,216.79-30,304.44-9,131.22

Finding the Fourth Proportional to 20,216.79, 30,304.44 and 9,131.22

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Solution

The fourth proportional to 20,216.79, 30,304.44 and 9,131.22 is: 13,687.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.79 : 30,304.44 = 9,131.22 : x
  2. Step 2: Convert to fraction form
    20,216.79/30,304.44 = 9,131.22/x
  3. Step 3: Cross multiply
    20,216.79x = 30,304.44 × 9,131.22
  4. Step 4: Simplify right side
    20,216.79x = 276,716,508.62
  5. Step 5: Solve for x
    x = 276,716,508.62/20,216.79
  6. Step 6: Final answer
    x = 13,687.46

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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.