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Finding the Fourth Proportional to 22,362.40, 33,543.60 and 20,672.80

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Solution

The fourth proportional to 22,362.40, 33,543.60 and 20,672.80 is: 31,009.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,362.40 : 33,543.60 = 20,672.80 : x
  2. Step 2: Convert to fraction form
    22,362.40/33,543.60 = 20,672.80/x
  3. Step 3: Cross multiply
    22,362.40x = 33,543.60 × 20,672.80
  4. Step 4: Simplify right side
    22,362.40x = 693,440,134.08
  5. Step 5: Solve for x
    x = 693,440,134.08/22,362.40
  6. Step 6: Final answer
    x = 31,009.20

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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.