Home / 13,875.44-20,813.20-5,106.56

Finding the Fourth Proportional to 13,875.44, 20,813.20 and 5,106.56

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Solution

The fourth proportional to 13,875.44, 20,813.20 and 5,106.56 is: 7,659.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,875.44 : 20,813.20 = 5,106.56 : x
  2. Step 2: Convert to fraction form
    13,875.44/20,813.20 = 5,106.56/x
  3. Step 3: Cross multiply
    13,875.44x = 20,813.20 × 5,106.56
  4. Step 4: Simplify right side
    13,875.44x = 106,283,854.59
  5. Step 5: Solve for x
    x = 106,283,854.59/13,875.44
  6. Step 6: Final answer
    x = 7,659.85

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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.