Home / 21,770.66-30,043.18-12,210.55

Finding the Fourth Proportional to 21,770.66, 30,043.18 and 12,210.55

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Solution

The fourth proportional to 21,770.66, 30,043.18 and 12,210.55 is: 16,850.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,770.66 : 30,043.18 = 12,210.55 : x
  2. Step 2: Convert to fraction form
    21,770.66/30,043.18 = 12,210.55/x
  3. Step 3: Cross multiply
    21,770.66x = 30,043.18 × 12,210.55
  4. Step 4: Simplify right side
    21,770.66x = 366,843,691.70
  5. Step 5: Solve for x
    x = 366,843,691.70/21,770.66
  6. Step 6: Final answer
    x = 16,850.37

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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.