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Finding the Fourth Proportional to 18,141.16, 27,217.79 and 7,048.21

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Solution

The fourth proportional to 18,141.16, 27,217.79 and 7,048.21 is: 10,574.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,141.16 : 27,217.79 = 7,048.21 : x
  2. Step 2: Convert to fraction form
    18,141.16/27,217.79 = 7,048.21/x
  3. Step 3: Cross multiply
    18,141.16x = 27,217.79 × 7,048.21
  4. Step 4: Simplify right side
    18,141.16x = 191,836,699.66
  5. Step 5: Solve for x
    x = 191,836,699.66/18,141.16
  6. Step 6: Final answer
    x = 10,574.67

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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.