Home / 10,399.19-14,342.62-7,855.43

Finding the Fourth Proportional to 10,399.19, 14,342.62 and 7,855.43

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Solution

The fourth proportional to 10,399.19, 14,342.62 and 7,855.43 is: 10,834.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,399.19 : 14,342.62 = 7,855.43 : x
  2. Step 2: Convert to fraction form
    10,399.19/14,342.62 = 7,855.43/x
  3. Step 3: Cross multiply
    10,399.19x = 14,342.62 × 7,855.43
  4. Step 4: Simplify right side
    10,399.19x = 112,667,451.48
  5. Step 5: Solve for x
    x = 112,667,451.48/10,399.19
  6. Step 6: Final answer
    x = 10,834.26

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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.