Home / 13,769.90-20,656.20-4,407.56

Finding the Fourth Proportional to 13,769.90, 20,656.20 and 4,407.56

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Solution

The fourth proportional to 13,769.90, 20,656.20 and 4,407.56 is: 6,611.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,769.90 : 20,656.20 = 4,407.56 : x
  2. Step 2: Convert to fraction form
    13,769.90/20,656.20 = 4,407.56/x
  3. Step 3: Cross multiply
    13,769.90x = 20,656.20 × 4,407.56
  4. Step 4: Simplify right side
    13,769.90x = 91,043,440.87
  5. Step 5: Solve for x
    x = 91,043,440.87/13,769.90
  6. Step 6: Final answer
    x = 6,611.77

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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.