Home / 20,922.51-28,874.84-11,493.03

Finding the Fourth Proportional to 20,922.51, 28,874.84 and 11,493.03

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Solution

The fourth proportional to 20,922.51, 28,874.84 and 11,493.03 is: 15,861.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.51 : 28,874.84 = 11,493.03 : x
  2. Step 2: Convert to fraction form
    20,922.51/28,874.84 = 11,493.03/x
  3. Step 3: Cross multiply
    20,922.51x = 28,874.84 × 11,493.03
  4. Step 4: Simplify right side
    20,922.51x = 331,859,344.90
  5. Step 5: Solve for x
    x = 331,859,344.90/20,922.51
  6. Step 6: Final answer
    x = 15,861.35

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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.