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Finding the Fourth Proportional to 18,189.53, 27,281.60 and 5,040.53

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Solution

The fourth proportional to 18,189.53, 27,281.60 and 5,040.53 is: 7,560.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189.53 : 27,281.60 = 5,040.53 : x
  2. Step 2: Convert to fraction form
    18,189.53/27,281.60 = 5,040.53/x
  3. Step 3: Cross multiply
    18,189.53x = 27,281.60 × 5,040.53
  4. Step 4: Simplify right side
    18,189.53x = 137,513,698.05
  5. Step 5: Solve for x
    x = 137,513,698.05/18,189.53
  6. Step 6: Final answer
    x = 7,560.05

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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.