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Finding the Fourth Proportional to 22,245.80, 33,320.10 and 19,783.40

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Solution

The fourth proportional to 22,245.80, 33,320.10 and 19,783.40 is: 29,631.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,245.80 : 33,320.10 = 19,783.40 : x
  2. Step 2: Convert to fraction form
    22,245.80/33,320.10 = 19,783.40/x
  3. Step 3: Cross multiply
    22,245.80x = 33,320.10 × 19,783.40
  4. Step 4: Simplify right side
    22,245.80x = 659,184,866.34
  5. Step 5: Solve for x
    x = 659,184,866.34/22,245.80
  6. Step 6: Final answer
    x = 29,631.88

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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.