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Finding the Fourth Proportional to 18,155.88, 27,226.08 and 6,909.30

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Solution

The fourth proportional to 18,155.88, 27,226.08 and 6,909.30 is: 10,361.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,155.88 : 27,226.08 = 6,909.30 : x
  2. Step 2: Convert to fraction form
    18,155.88/27,226.08 = 6,909.30/x
  3. Step 3: Cross multiply
    18,155.88x = 27,226.08 × 6,909.30
  4. Step 4: Simplify right side
    18,155.88x = 188,113,154.54
  5. Step 5: Solve for x
    x = 188,113,154.54/18,155.88
  6. Step 6: Final answer
    x = 10,361.00

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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.