Home / 12,221.31-18,332.01-8,910.66

Finding the Fourth Proportional to 12,221.31, 18,332.01 and 8,910.66

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Solution

The fourth proportional to 12,221.31, 18,332.01 and 8,910.66 is: 13,366.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.31 : 18,332.01 = 8,910.66 : x
  2. Step 2: Convert to fraction form
    12,221.31/18,332.01 = 8,910.66/x
  3. Step 3: Cross multiply
    12,221.31x = 18,332.01 × 8,910.66
  4. Step 4: Simplify right side
    12,221.31x = 163,350,308.23
  5. Step 5: Solve for x
    x = 163,350,308.23/12,221.31
  6. Step 6: Final answer
    x = 13,366.02

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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.