Home / 13,447.56-20,121.57-8,113.83

Finding the Fourth Proportional to 13,447.56, 20,121.57 and 8,113.83

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Solution

The fourth proportional to 13,447.56, 20,121.57 and 8,113.83 is: 12,140.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.56 : 20,121.57 = 8,113.83 : x
  2. Step 2: Convert to fraction form
    13,447.56/20,121.57 = 8,113.83/x
  3. Step 3: Cross multiply
    13,447.56x = 20,121.57 × 8,113.83
  4. Step 4: Simplify right side
    13,447.56x = 163,262,998.31
  5. Step 5: Solve for x
    x = 163,262,998.31/13,447.56
  6. Step 6: Final answer
    x = 12,140.72

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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.