Home / 12,216.64-18,296.46-8,921.56

Finding the Fourth Proportional to 12,216.64, 18,296.46 and 8,921.56

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Solution

The fourth proportional to 12,216.64, 18,296.46 and 8,921.56 is: 13,361.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,216.64 : 18,296.46 = 8,921.56 : x
  2. Step 2: Convert to fraction form
    12,216.64/18,296.46 = 8,921.56/x
  3. Step 3: Cross multiply
    12,216.64x = 18,296.46 × 8,921.56
  4. Step 4: Simplify right side
    12,216.64x = 163,232,965.68
  5. Step 5: Solve for x
    x = 163,232,965.68/12,216.64
  6. Step 6: Final answer
    x = 13,361.53

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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.