Home / 19,770.57-27,280.70-11,811.11

Finding the Fourth Proportional to 19,770.57, 27,280.70 and 11,811.11

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Solution

The fourth proportional to 19,770.57, 27,280.70 and 11,811.11 is: 16,297.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,770.57 : 27,280.70 = 11,811.11 : x
  2. Step 2: Convert to fraction form
    19,770.57/27,280.70 = 11,811.11/x
  3. Step 3: Cross multiply
    19,770.57x = 27,280.70 × 11,811.11
  4. Step 4: Simplify right side
    19,770.57x = 322,215,348.58
  5. Step 5: Solve for x
    x = 322,215,348.58/19,770.57
  6. Step 6: Final answer
    x = 16,297.73

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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.