Home / 12,477.05-17,221.22-8,228.87

Finding the Fourth Proportional to 12,477.05, 17,221.22 and 8,228.87

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Solution

The fourth proportional to 12,477.05, 17,221.22 and 8,228.87 is: 11,357.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,477.05 : 17,221.22 = 8,228.87 : x
  2. Step 2: Convert to fraction form
    12,477.05/17,221.22 = 8,228.87/x
  3. Step 3: Cross multiply
    12,477.05x = 17,221.22 × 8,228.87
  4. Step 4: Simplify right side
    12,477.05x = 141,711,201.19
  5. Step 5: Solve for x
    x = 141,711,201.19/12,477.05
  6. Step 6: Final answer
    x = 11,357.75

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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.