Home / 13,869.96-20,813.44-5,104.95

Finding the Fourth Proportional to 13,869.96, 20,813.44 and 5,104.95

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Solution

The fourth proportional to 13,869.96, 20,813.44 and 5,104.95 is: 7,660.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.96 : 20,813.44 = 5,104.95 : x
  2. Step 2: Convert to fraction form
    13,869.96/20,813.44 = 5,104.95/x
  3. Step 3: Cross multiply
    13,869.96x = 20,813.44 × 5,104.95
  4. Step 4: Simplify right side
    13,869.96x = 106,251,570.53
  5. Step 5: Solve for x
    x = 106,251,570.53/13,869.96
  6. Step 6: Final answer
    x = 7,660.55

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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.