Home / 12,261.80-16,921.84-7,226.23

Finding the Fourth Proportional to 12,261.80, 16,921.84 and 7,226.23

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Solution

The fourth proportional to 12,261.80, 16,921.84 and 7,226.23 is: 9,972.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.80 : 16,921.84 = 7,226.23 : x
  2. Step 2: Convert to fraction form
    12,261.80/16,921.84 = 7,226.23/x
  3. Step 3: Cross multiply
    12,261.80x = 16,921.84 × 7,226.23
  4. Step 4: Simplify right side
    12,261.80x = 122,281,107.86
  5. Step 5: Solve for x
    x = 122,281,107.86/12,261.80
  6. Step 6: Final answer
    x = 9,972.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.