Home / 18,475.10-27,716.70-9,119.60

Finding the Fourth Proportional to 18,475.10, 27,716.70 and 9,119.60

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Solution

The fourth proportional to 18,475.10, 27,716.70 and 9,119.60 is: 13,681.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,475.10 : 27,716.70 = 9,119.60 : x
  2. Step 2: Convert to fraction form
    18,475.10/27,716.70 = 9,119.60/x
  3. Step 3: Cross multiply
    18,475.10x = 27,716.70 × 9,119.60
  4. Step 4: Simplify right side
    18,475.10x = 252,765,217.32
  5. Step 5: Solve for x
    x = 252,765,217.32/18,475.10
  6. Step 6: Final answer
    x = 13,681.40

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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.