Home / 18,665.27-27,998.71-8,679.39

Finding the Fourth Proportional to 18,665.27, 27,998.71 and 8,679.39

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Solution

The fourth proportional to 18,665.27, 27,998.71 and 8,679.39 is: 13,019.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.27 : 27,998.71 = 8,679.39 : x
  2. Step 2: Convert to fraction form
    18,665.27/27,998.71 = 8,679.39/x
  3. Step 3: Cross multiply
    18,665.27x = 27,998.71 × 8,679.39
  4. Step 4: Simplify right side
    18,665.27x = 243,011,645.71
  5. Step 5: Solve for x
    x = 243,011,645.71/18,665.27
  6. Step 6: Final answer
    x = 13,019.46

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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.