Home / 18,318.05-27,422.40-10,918.70

Finding the Fourth Proportional to 18,318.05, 27,422.40 and 10,918.70

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Solution

The fourth proportional to 18,318.05, 27,422.40 and 10,918.70 is: 16,345.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,318.05 : 27,422.40 = 10,918.70 : x
  2. Step 2: Convert to fraction form
    18,318.05/27,422.40 = 10,918.70/x
  3. Step 3: Cross multiply
    18,318.05x = 27,422.40 × 10,918.70
  4. Step 4: Simplify right side
    18,318.05x = 299,416,958.88
  5. Step 5: Solve for x
    x = 299,416,958.88/18,318.05
  6. Step 6: Final answer
    x = 16,345.46

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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.