Home / 13,712.05-18,922.70-7,424.42

Finding the Fourth Proportional to 13,712.05, 18,922.70 and 7,424.42

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Solution

The fourth proportional to 13,712.05, 18,922.70 and 7,424.42 is: 10,245.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.05 : 18,922.70 = 7,424.42 : x
  2. Step 2: Convert to fraction form
    13,712.05/18,922.70 = 7,424.42/x
  3. Step 3: Cross multiply
    13,712.05x = 18,922.70 × 7,424.42
  4. Step 4: Simplify right side
    13,712.05x = 140,490,035.21
  5. Step 5: Solve for x
    x = 140,490,035.21/13,712.05
  6. Step 6: Final answer
    x = 10,245.74

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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.