Home / 21,982.35-30,334.93-12,550.91

Finding the Fourth Proportional to 21,982.35, 30,334.93 and 12,550.91

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Solution

The fourth proportional to 21,982.35, 30,334.93 and 12,550.91 is: 17,319.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,982.35 : 30,334.93 = 12,550.91 : x
  2. Step 2: Convert to fraction form
    21,982.35/30,334.93 = 12,550.91/x
  3. Step 3: Cross multiply
    21,982.35x = 30,334.93 × 12,550.91
  4. Step 4: Simplify right side
    21,982.35x = 380,731,020.75
  5. Step 5: Solve for x
    x = 380,731,020.75/21,982.35
  6. Step 6: Final answer
    x = 17,319.85

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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.