Home / 18,291.27-27,431.47-7,761.15

Finding the Fourth Proportional to 18,291.27, 27,431.47 and 7,761.15

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Solution

The fourth proportional to 18,291.27, 27,431.47 and 7,761.15 is: 11,639.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.27 : 27,431.47 = 7,761.15 : x
  2. Step 2: Convert to fraction form
    18,291.27/27,431.47 = 7,761.15/x
  3. Step 3: Cross multiply
    18,291.27x = 27,431.47 × 7,761.15
  4. Step 4: Simplify right side
    18,291.27x = 212,899,753.39
  5. Step 5: Solve for x
    x = 212,899,753.39/18,291.27
  6. Step 6: Final answer
    x = 11,639.42

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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.