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Finding the Fourth Proportional to 21,893.92, 32,836.92 and 7,100.80

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Solution

The fourth proportional to 21,893.92, 32,836.92 and 7,100.80 is: 10,649.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,893.92 : 32,836.92 = 7,100.80 : x
  2. Step 2: Convert to fraction form
    21,893.92/32,836.92 = 7,100.80/x
  3. Step 3: Cross multiply
    21,893.92x = 32,836.92 × 7,100.80
  4. Step 4: Simplify right side
    21,893.92x = 233,168,401.54
  5. Step 5: Solve for x
    x = 233,168,401.54/21,893.92
  6. Step 6: Final answer
    x = 10,649.92

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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.