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Finding the Fourth Proportional to 18,642.70, 27,973.80 and 7,550.56

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Solution

The fourth proportional to 18,642.70, 27,973.80 and 7,550.56 is: 11,329.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642.70 : 27,973.80 = 7,550.56 : x
  2. Step 2: Convert to fraction form
    18,642.70/27,973.80 = 7,550.56/x
  3. Step 3: Cross multiply
    18,642.70x = 27,973.80 × 7,550.56
  4. Step 4: Simplify right side
    18,642.70x = 211,217,855.33
  5. Step 5: Solve for x
    x = 211,217,855.33/18,642.70
  6. Step 6: Final answer
    x = 11,329.79

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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.