Home / 20,217.88-27,900.36-11,265.34

Finding the Fourth Proportional to 20,217.88, 27,900.36 and 11,265.34

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Solution

The fourth proportional to 20,217.88, 27,900.36 and 11,265.34 is: 15,545.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,217.88 : 27,900.36 = 11,265.34 : x
  2. Step 2: Convert to fraction form
    20,217.88/27,900.36 = 11,265.34/x
  3. Step 3: Cross multiply
    20,217.88x = 27,900.36 × 11,265.34
  4. Step 4: Simplify right side
    20,217.88x = 314,307,041.52
  5. Step 5: Solve for x
    x = 314,307,041.52/20,217.88
  6. Step 6: Final answer
    x = 15,545.99

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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.