Home / 10,426.05-15,620.61-8,660.73

Finding the Fourth Proportional to 10,426.05, 15,620.61 and 8,660.73

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Solution

The fourth proportional to 10,426.05, 15,620.61 and 8,660.73 is: 12,975.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,426.05 : 15,620.61 = 8,660.73 : x
  2. Step 2: Convert to fraction form
    10,426.05/15,620.61 = 8,660.73/x
  3. Step 3: Cross multiply
    10,426.05x = 15,620.61 × 8,660.73
  4. Step 4: Simplify right side
    10,426.05x = 135,285,829.19
  5. Step 5: Solve for x
    x = 135,285,829.19/10,426.05
  6. Step 6: Final answer
    x = 12,975.76

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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.