Home / 28,447.11-42,665.81-7,665.75

Finding the Fourth Proportional to 28,447.11, 42,665.81 and 7,665.75

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Solution

The fourth proportional to 28,447.11, 42,665.81 and 7,665.75 is: 11,497.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.11 : 42,665.81 = 7,665.75 : x
  2. Step 2: Convert to fraction form
    28,447.11/42,665.81 = 7,665.75/x
  3. Step 3: Cross multiply
    28,447.11x = 42,665.81 × 7,665.75
  4. Step 4: Simplify right side
    28,447.11x = 327,065,394.68
  5. Step 5: Solve for x
    x = 327,065,394.68/28,447.11
  6. Step 6: Final answer
    x = 11,497.32

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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.