Home / 13,808.19-20,712.96-3,948.92

Finding the Fourth Proportional to 13,808.19, 20,712.96 and 3,948.92

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Solution

The fourth proportional to 13,808.19, 20,712.96 and 3,948.92 is: 5,923.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.19 : 20,712.96 = 3,948.92 : x
  2. Step 2: Convert to fraction form
    13,808.19/20,712.96 = 3,948.92/x
  3. Step 3: Cross multiply
    13,808.19x = 20,712.96 × 3,948.92
  4. Step 4: Simplify right side
    13,808.19x = 81,793,718.44
  5. Step 5: Solve for x
    x = 81,793,718.44/13,808.19
  6. Step 6: Final answer
    x = 5,923.57

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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.