Home / 13,903.96-20,849.10-7,979.92

Finding the Fourth Proportional to 13,903.96, 20,849.10 and 7,979.92

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Solution

The fourth proportional to 13,903.96, 20,849.10 and 7,979.92 is: 11,965.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.96 : 20,849.10 = 7,979.92 : x
  2. Step 2: Convert to fraction form
    13,903.96/20,849.10 = 7,979.92/x
  3. Step 3: Cross multiply
    13,903.96x = 20,849.10 × 7,979.92
  4. Step 4: Simplify right side
    13,903.96x = 166,374,150.07
  5. Step 5: Solve for x
    x = 166,374,150.07/13,903.96
  6. Step 6: Final answer
    x = 11,965.95

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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.