Home / 28,918.08-39,906.67-16,171.11

Finding the Fourth Proportional to 28,918.08, 39,906.67 and 16,171.11

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Solution

The fourth proportional to 28,918.08, 39,906.67 and 16,171.11 is: 22,315.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,918.08 : 39,906.67 = 16,171.11 : x
  2. Step 2: Convert to fraction form
    28,918.08/39,906.67 = 16,171.11/x
  3. Step 3: Cross multiply
    28,918.08x = 39,906.67 × 16,171.11
  4. Step 4: Simplify right side
    28,918.08x = 645,335,320.17
  5. Step 5: Solve for x
    x = 645,335,320.17/28,918.08
  6. Step 6: Final answer
    x = 22,315.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.