Home / 12,628.15-18,947.68-6,777.92

Finding the Fourth Proportional to 12,628.15, 18,947.68 and 6,777.92

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Solution

The fourth proportional to 12,628.15, 18,947.68 and 6,777.92 is: 10,169.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,628.15 : 18,947.68 = 6,777.92 : x
  2. Step 2: Convert to fraction form
    12,628.15/18,947.68 = 6,777.92/x
  3. Step 3: Cross multiply
    12,628.15x = 18,947.68 × 6,777.92
  4. Step 4: Simplify right side
    12,628.15x = 128,425,859.23
  5. Step 5: Solve for x
    x = 128,425,859.23/12,628.15
  6. Step 6: Final answer
    x = 10,169.81

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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.