Home / 10,785.48-16,177.77-3,389.78

Finding the Fourth Proportional to 10,785.48, 16,177.77 and 3,389.78

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Solution

The fourth proportional to 10,785.48, 16,177.77 and 3,389.78 is: 5,084.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,785.48 : 16,177.77 = 3,389.78 : x
  2. Step 2: Convert to fraction form
    10,785.48/16,177.77 = 3,389.78/x
  3. Step 3: Cross multiply
    10,785.48x = 16,177.77 × 3,389.78
  4. Step 4: Simplify right side
    10,785.48x = 54,838,983.35
  5. Step 5: Solve for x
    x = 54,838,983.35/10,785.48
  6. Step 6: Final answer
    x = 5,084.52

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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.