Home / 10,784.80-16,177.20-3,389.76

Finding the Fourth Proportional to 10,784.80, 16,177.20 and 3,389.76

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Solution

The fourth proportional to 10,784.80, 16,177.20 and 3,389.76 is: 5,084.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,784.80 : 16,177.20 = 3,389.76 : x
  2. Step 2: Convert to fraction form
    10,784.80/16,177.20 = 3,389.76/x
  3. Step 3: Cross multiply
    10,784.80x = 16,177.20 × 3,389.76
  4. Step 4: Simplify right side
    10,784.80x = 54,836,825.47
  5. Step 5: Solve for x
    x = 54,836,825.47/10,784.80
  6. Step 6: Final answer
    x = 5,084.64

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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.