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Finding the Fourth Proportional to 18,657.99, 27,986.99 and 12,796.83

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Solution

The fourth proportional to 18,657.99, 27,986.99 and 12,796.83 is: 19,195.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,657.99 : 27,986.99 = 12,796.83 : x
  2. Step 2: Convert to fraction form
    18,657.99/27,986.99 = 12,796.83/x
  3. Step 3: Cross multiply
    18,657.99x = 27,986.99 × 12,796.83
  4. Step 4: Simplify right side
    18,657.99x = 358,144,689.26
  5. Step 5: Solve for x
    x = 358,144,689.26/18,657.99
  6. Step 6: Final answer
    x = 19,195.25

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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.