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Finding the Fourth Proportional to 18,219.99, 27,338.66 and 9,454.88

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Solution

The fourth proportional to 18,219.99, 27,338.66 and 9,454.88 is: 14,186.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219.99 : 27,338.66 = 9,454.88 : x
  2. Step 2: Convert to fraction form
    18,219.99/27,338.66 = 9,454.88/x
  3. Step 3: Cross multiply
    18,219.99x = 27,338.66 × 9,454.88
  4. Step 4: Simplify right side
    18,219.99x = 258,483,705.59
  5. Step 5: Solve for x
    x = 258,483,705.59/18,219.99
  6. Step 6: Final answer
    x = 14,186.82

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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.