Home / 10,781.40-16,173.81-3,384.21

Finding the Fourth Proportional to 10,781.40, 16,173.81 and 3,384.21

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Solution

The fourth proportional to 10,781.40, 16,173.81 and 3,384.21 is: 5,076.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.40 : 16,173.81 = 3,384.21 : x
  2. Step 2: Convert to fraction form
    10,781.40/16,173.81 = 3,384.21/x
  3. Step 3: Cross multiply
    10,781.40x = 16,173.81 × 3,384.21
  4. Step 4: Simplify right side
    10,781.40x = 54,735,569.54
  5. Step 5: Solve for x
    x = 54,735,569.54/10,781.40
  6. Step 6: Final answer
    x = 5,076.85

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1.5x scale

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.