Home / 21,788.55-30,085.11-16,744.80

Finding the Fourth Proportional to 21,788.55, 30,085.11 and 16,744.80

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Solution

The fourth proportional to 21,788.55, 30,085.11 and 16,744.80 is: 23,120.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,788.55 : 30,085.11 = 16,744.80 : x
  2. Step 2: Convert to fraction form
    21,788.55/30,085.11 = 16,744.80/x
  3. Step 3: Cross multiply
    21,788.55x = 30,085.11 × 16,744.80
  4. Step 4: Simplify right side
    21,788.55x = 503,769,149.93
  5. Step 5: Solve for x
    x = 503,769,149.93/21,788.55
  6. Step 6: Final answer
    x = 23,120.82

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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.