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Finding the Fourth Proportional to 18,141.12, 27,216.12 and 7,048.56

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Solution

The fourth proportional to 18,141.12, 27,216.12 and 7,048.56 is: 10,574.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,141.12 : 27,216.12 = 7,048.56 : x
  2. Step 2: Convert to fraction form
    18,141.12/27,216.12 = 7,048.56/x
  3. Step 3: Cross multiply
    18,141.12x = 27,216.12 × 7,048.56
  4. Step 4: Simplify right side
    18,141.12x = 191,834,454.79
  5. Step 5: Solve for x
    x = 191,834,454.79/18,141.12
  6. Step 6: Final answer
    x = 10,574.57

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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.