Home / 13,712.18-18,922.60-7,424.56

Finding the Fourth Proportional to 13,712.18, 18,922.60 and 7,424.56

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Solution

The fourth proportional to 13,712.18, 18,922.60 and 7,424.56 is: 10,245.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.18 : 18,922.60 = 7,424.56 : x
  2. Step 2: Convert to fraction form
    13,712.18/18,922.60 = 7,424.56/x
  3. Step 3: Cross multiply
    13,712.18x = 18,922.60 × 7,424.56
  4. Step 4: Simplify right side
    13,712.18x = 140,491,847.32
  5. Step 5: Solve for x
    x = 140,491,847.32/13,712.18
  6. Step 6: Final answer
    x = 10,245.77

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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.