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Finding the Fourth Proportional to 18,641.86, 27,972.50 and 7,556.74

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Solution

The fourth proportional to 18,641.86, 27,972.50 and 7,556.74 is: 11,339.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,641.86 : 27,972.50 = 7,556.74 : x
  2. Step 2: Convert to fraction form
    18,641.86/27,972.50 = 7,556.74/x
  3. Step 3: Cross multiply
    18,641.86x = 27,972.50 × 7,556.74
  4. Step 4: Simplify right side
    18,641.86x = 211,380,909.65
  5. Step 5: Solve for x
    x = 211,380,909.65/18,641.86
  6. Step 6: Final answer
    x = 11,339.05

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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.