Home / 18,949.77-28,412.51-7,864.11

Finding the Fourth Proportional to 18,949.77, 28,412.51 and 7,864.11

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Solution

The fourth proportional to 18,949.77, 28,412.51 and 7,864.11 is: 11,791.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,949.77 : 28,412.51 = 7,864.11 : x
  2. Step 2: Convert to fraction form
    18,949.77/28,412.51 = 7,864.11/x
  3. Step 3: Cross multiply
    18,949.77x = 28,412.51 × 7,864.11
  4. Step 4: Simplify right side
    18,949.77x = 223,439,104.02
  5. Step 5: Solve for x
    x = 223,439,104.02/18,949.77
  6. Step 6: Final answer
    x = 11,791.12

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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.