Home / 21,770.68-30,046.06-12,213.18

Finding the Fourth Proportional to 21,770.68, 30,046.06 and 12,213.18

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Solution

The fourth proportional to 21,770.68, 30,046.06 and 12,213.18 is: 16,855.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,770.68 : 30,046.06 = 12,213.18 : x
  2. Step 2: Convert to fraction form
    21,770.68/30,046.06 = 12,213.18/x
  3. Step 3: Cross multiply
    21,770.68x = 30,046.06 × 12,213.18
  4. Step 4: Simplify right side
    21,770.68x = 366,957,939.07
  5. Step 5: Solve for x
    x = 366,957,939.07/21,770.68
  6. Step 6: Final answer
    x = 16,855.60

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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.