Home / 19,770.42-27,282.14-11,272.80

Finding the Fourth Proportional to 19,770.42, 27,282.14 and 11,272.80

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Solution

The fourth proportional to 19,770.42, 27,282.14 and 11,272.80 is: 15,555.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,770.42 : 27,282.14 = 11,272.80 : x
  2. Step 2: Convert to fraction form
    19,770.42/27,282.14 = 11,272.80/x
  3. Step 3: Cross multiply
    19,770.42x = 27,282.14 × 11,272.80
  4. Step 4: Simplify right side
    19,770.42x = 307,546,107.79
  5. Step 5: Solve for x
    x = 307,546,107.79/19,770.42
  6. Step 6: Final answer
    x = 15,555.87

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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.