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Finding the Fourth Proportional to 22,353.80, 33,530.70 and 20,280.20

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Solution

The fourth proportional to 22,353.80, 33,530.70 and 20,280.20 is: 30,420.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,353.80 : 33,530.70 = 20,280.20 : x
  2. Step 2: Convert to fraction form
    22,353.80/33,530.70 = 20,280.20/x
  3. Step 3: Cross multiply
    22,353.80x = 33,530.70 × 20,280.20
  4. Step 4: Simplify right side
    22,353.80x = 680,009,302.14
  5. Step 5: Solve for x
    x = 680,009,302.14/22,353.80
  6. Step 6: Final answer
    x = 30,420.30

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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.