Home / 13,671.36-20,504.81-3,808.40

Finding the Fourth Proportional to 13,671.36, 20,504.81 and 3,808.40

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Solution

The fourth proportional to 13,671.36, 20,504.81 and 3,808.40 is: 5,711.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.36 : 20,504.81 = 3,808.40 : x
  2. Step 2: Convert to fraction form
    13,671.36/20,504.81 = 3,808.40/x
  3. Step 3: Cross multiply
    13,671.36x = 20,504.81 × 3,808.40
  4. Step 4: Simplify right side
    13,671.36x = 78,090,425.40
  5. Step 5: Solve for x
    x = 78,090,425.40/13,671.36
  6. Step 6: Final answer
    x = 5,711.97

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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.