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Finding the Fourth Proportional to 18,154.18, 27,242.18 and 7,765.94

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Solution

The fourth proportional to 18,154.18, 27,242.18 and 7,765.94 is: 11,653.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,154.18 : 27,242.18 = 7,765.94 : x
  2. Step 2: Convert to fraction form
    18,154.18/27,242.18 = 7,765.94/x
  3. Step 3: Cross multiply
    18,154.18x = 27,242.18 × 7,765.94
  4. Step 4: Simplify right side
    18,154.18x = 211,561,135.35
  5. Step 5: Solve for x
    x = 211,561,135.35/18,154.18
  6. Step 6: Final answer
    x = 11,653.58

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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.