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Finding the Fourth Proportional to 34,799.28, 48,021.84 and 20,643.84

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Solution

The fourth proportional to 34,799.28, 48,021.84 and 20,643.84 is: 28,487.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,799.28 : 48,021.84 = 20,643.84 : x
  2. Step 2: Convert to fraction form
    34,799.28/48,021.84 = 20,643.84/x
  3. Step 3: Cross multiply
    34,799.28x = 48,021.84 × 20,643.84
  4. Step 4: Simplify right side
    34,799.28x = 991,355,181.47
  5. Step 5: Solve for x
    x = 991,355,181.47/34,799.28
  6. Step 6: Final answer
    x = 28,487.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.