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Finding the Fourth Proportional to 18,518.67, 27,778.01 and 6,829.16

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Solution

The fourth proportional to 18,518.67, 27,778.01 and 6,829.16 is: 10,243.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.67 : 27,778.01 = 6,829.16 : x
  2. Step 2: Convert to fraction form
    18,518.67/27,778.01 = 6,829.16/x
  3. Step 3: Cross multiply
    18,518.67x = 27,778.01 × 6,829.16
  4. Step 4: Simplify right side
    18,518.67x = 189,700,301.74
  5. Step 5: Solve for x
    x = 189,700,301.74/18,518.67
  6. Step 6: Final answer
    x = 10,243.73

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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.