Home / 13,789.94-20,658.80-8,150.74

Finding the Fourth Proportional to 13,789.94, 20,658.80 and 8,150.74

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Solution

The fourth proportional to 13,789.94, 20,658.80 and 8,150.74 is: 12,210.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.94 : 20,658.80 = 8,150.74 : x
  2. Step 2: Convert to fraction form
    13,789.94/20,658.80 = 8,150.74/x
  3. Step 3: Cross multiply
    13,789.94x = 20,658.80 × 8,150.74
  4. Step 4: Simplify right side
    13,789.94x = 168,384,507.51
  5. Step 5: Solve for x
    x = 168,384,507.51/13,789.94
  6. Step 6: Final answer
    x = 12,210.68

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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.