Home / 13,812.36-20,703.75-5,480.83

Finding the Fourth Proportional to 13,812.36, 20,703.75 and 5,480.83

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Solution

The fourth proportional to 13,812.36, 20,703.75 and 5,480.83 is: 8,215.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.36 : 20,703.75 = 5,480.83 : x
  2. Step 2: Convert to fraction form
    13,812.36/20,703.75 = 5,480.83/x
  3. Step 3: Cross multiply
    13,812.36x = 20,703.75 × 5,480.83
  4. Step 4: Simplify right side
    13,812.36x = 113,473,734.11
  5. Step 5: Solve for x
    x = 113,473,734.11/13,812.36
  6. Step 6: Final answer
    x = 8,215.38

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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.