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Finding the Fourth Proportional to 18,658.81, 27,995.51 and 6,969.30

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Solution

The fourth proportional to 18,658.81, 27,995.51 and 6,969.30 is: 10,456.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.81 : 27,995.51 = 6,969.30 : x
  2. Step 2: Convert to fraction form
    18,658.81/27,995.51 = 6,969.30/x
  3. Step 3: Cross multiply
    18,658.81x = 27,995.51 × 6,969.30
  4. Step 4: Simplify right side
    18,658.81x = 195,109,107.84
  5. Step 5: Solve for x
    x = 195,109,107.84/18,658.81
  6. Step 6: Final answer
    x = 10,456.67

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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.