Home / 20,910.90-31,366.26-11,050.20

Finding the Fourth Proportional to 20,910.90, 31,366.26 and 11,050.20

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Solution

The fourth proportional to 20,910.90, 31,366.26 and 11,050.20 is: 16,575.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.90 : 31,366.26 = 11,050.20 : x
  2. Step 2: Convert to fraction form
    20,910.90/31,366.26 = 11,050.20/x
  3. Step 3: Cross multiply
    20,910.90x = 31,366.26 × 11,050.20
  4. Step 4: Simplify right side
    20,910.90x = 346,603,446.25
  5. Step 5: Solve for x
    x = 346,603,446.25/20,910.90
  6. Step 6: Final answer
    x = 16,575.25

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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.