Home / 19,723.11-27,217.83-12,649.50

Finding the Fourth Proportional to 19,723.11, 27,217.83 and 12,649.50

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Solution

The fourth proportional to 19,723.11, 27,217.83 and 12,649.50 is: 17,456.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,723.11 : 27,217.83 = 12,649.50 : x
  2. Step 2: Convert to fraction form
    19,723.11/27,217.83 = 12,649.50/x
  3. Step 3: Cross multiply
    19,723.11x = 27,217.83 × 12,649.50
  4. Step 4: Simplify right side
    19,723.11x = 344,291,940.59
  5. Step 5: Solve for x
    x = 344,291,940.59/19,723.11
  6. Step 6: Final answer
    x = 17,456.27

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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.