Home / 12,422.40-18,622.80-11,110.20

Finding the Fourth Proportional to 12,422.40, 18,622.80 and 11,110.20

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Solution

The fourth proportional to 12,422.40, 18,622.80 and 11,110.20 is: 16,655.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,422.40 : 18,622.80 = 11,110.20 : x
  2. Step 2: Convert to fraction form
    12,422.40/18,622.80 = 11,110.20/x
  3. Step 3: Cross multiply
    12,422.40x = 18,622.80 × 11,110.20
  4. Step 4: Simplify right side
    12,422.40x = 206,903,032.56
  5. Step 5: Solve for x
    x = 206,903,032.56/12,422.40
  6. Step 6: Final answer
    x = 16,655.64

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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.