Home / 13,727.72-18,944.20-7,440.11

Finding the Fourth Proportional to 13,727.72, 18,944.20 and 7,440.11

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Solution

The fourth proportional to 13,727.72, 18,944.20 and 7,440.11 is: 10,267.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,727.72 : 18,944.20 = 7,440.11 : x
  2. Step 2: Convert to fraction form
    13,727.72/18,944.20 = 7,440.11/x
  3. Step 3: Cross multiply
    13,727.72x = 18,944.20 × 7,440.11
  4. Step 4: Simplify right side
    13,727.72x = 140,946,799.94
  5. Step 5: Solve for x
    x = 140,946,799.94/13,727.72
  6. Step 6: Final answer
    x = 10,267.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.