Home / 20,217.90-27,900.10-11,264.86

Finding the Fourth Proportional to 20,217.90, 27,900.10 and 11,264.86

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Solution

The fourth proportional to 20,217.90, 27,900.10 and 11,264.86 is: 15,545.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,217.90 : 27,900.10 = 11,264.86 : x
  2. Step 2: Convert to fraction form
    20,217.90/27,900.10 = 11,264.86/x
  3. Step 3: Cross multiply
    20,217.90x = 27,900.10 × 11,264.86
  4. Step 4: Simplify right side
    20,217.90x = 314,290,720.49
  5. Step 5: Solve for x
    x = 314,290,720.49/20,217.90
  6. Step 6: Final answer
    x = 15,545.17

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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.