Home / 10,786.23-16,178.28-3,390.49

Finding the Fourth Proportional to 10,786.23, 16,178.28 and 3,390.49

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Solution

The fourth proportional to 10,786.23, 16,178.28 and 3,390.49 is: 5,085.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,786.23 : 16,178.28 = 3,390.49 : x
  2. Step 2: Convert to fraction form
    10,786.23/16,178.28 = 3,390.49/x
  3. Step 3: Cross multiply
    10,786.23x = 16,178.28 × 3,390.49
  4. Step 4: Simplify right side
    10,786.23x = 54,852,323.14
  5. Step 5: Solve for x
    x = 54,852,323.14/10,786.23
  6. Step 6: Final answer
    x = 5,085.40

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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.