Home / 13,811.83-20,703.56-7,876.58

Finding the Fourth Proportional to 13,811.83, 20,703.56 and 7,876.58

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Solution

The fourth proportional to 13,811.83, 20,703.56 and 7,876.58 is: 11,806.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.83 : 20,703.56 = 7,876.58 : x
  2. Step 2: Convert to fraction form
    13,811.83/20,703.56 = 7,876.58/x
  3. Step 3: Cross multiply
    13,811.83x = 20,703.56 × 7,876.58
  4. Step 4: Simplify right side
    13,811.83x = 163,073,246.62
  5. Step 5: Solve for x
    x = 163,073,246.62/13,811.83
  6. Step 6: Final answer
    x = 11,806.78

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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.