Home / 30,795.84-42,469.92-20,181.60

Finding the Fourth Proportional to 30,795.84, 42,469.92 and 20,181.60

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Solution

The fourth proportional to 30,795.84, 42,469.92 and 20,181.60 is: 27,832.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,795.84 : 42,469.92 = 20,181.60 : x
  2. Step 2: Convert to fraction form
    30,795.84/42,469.92 = 20,181.60/x
  3. Step 3: Cross multiply
    30,795.84x = 42,469.92 × 20,181.60
  4. Step 4: Simplify right side
    30,795.84x = 857,110,937.47
  5. Step 5: Solve for x
    x = 857,110,937.47/30,795.84
  6. Step 6: Final answer
    x = 27,832.04

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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.