Home / 22,220.80-33,277.20-11,809.60

Finding the Fourth Proportional to 22,220.80, 33,277.20 and 11,809.60

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Solution

The fourth proportional to 22,220.80, 33,277.20 and 11,809.60 is: 17,685.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,220.80 : 33,277.20 = 11,809.60 : x
  2. Step 2: Convert to fraction form
    22,220.80/33,277.20 = 11,809.60/x
  3. Step 3: Cross multiply
    22,220.80x = 33,277.20 × 11,809.60
  4. Step 4: Simplify right side
    22,220.80x = 392,990,421.12
  5. Step 5: Solve for x
    x = 392,990,421.12/22,220.80
  6. Step 6: Final answer
    x = 17,685.70

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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.