Home / 22,212.80-33,319.20-19,985.60

Finding the Fourth Proportional to 22,212.80, 33,319.20 and 19,985.60

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Solution

The fourth proportional to 22,212.80, 33,319.20 and 19,985.60 is: 29,978.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,212.80 : 33,319.20 = 19,985.60 : x
  2. Step 2: Convert to fraction form
    22,212.80/33,319.20 = 19,985.60/x
  3. Step 3: Cross multiply
    22,212.80x = 33,319.20 × 19,985.60
  4. Step 4: Simplify right side
    22,212.80x = 665,904,203.52
  5. Step 5: Solve for x
    x = 665,904,203.52/22,212.80
  6. Step 6: Final answer
    x = 29,978.40

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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.