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Finding the Fourth Proportional to 18,338.13, 27,510.83 and 7,808.13

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Solution

The fourth proportional to 18,338.13, 27,510.83 and 7,808.13 is: 11,713.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,338.13 : 27,510.83 = 7,808.13 : x
  2. Step 2: Convert to fraction form
    18,338.13/27,510.83 = 7,808.13/x
  3. Step 3: Cross multiply
    18,338.13x = 27,510.83 × 7,808.13
  4. Step 4: Simplify right side
    18,338.13x = 214,808,137.05
  5. Step 5: Solve for x
    x = 214,808,137.05/18,338.13
  6. Step 6: Final answer
    x = 11,713.74

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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.