Home / 39,777.30-54,892.80-21,873.42

Finding the Fourth Proportional to 39,777.30, 54,892.80 and 21,873.42

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Solution

The fourth proportional to 39,777.30, 54,892.80 and 21,873.42 is: 30,185.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,777.30 : 54,892.80 = 21,873.42 : x
  2. Step 2: Convert to fraction form
    39,777.30/54,892.80 = 21,873.42/x
  3. Step 3: Cross multiply
    39,777.30x = 54,892.80 × 21,873.42
  4. Step 4: Simplify right side
    39,777.30x = 1,200,693,269.38
  5. Step 5: Solve for x
    x = 1,200,693,269.38/39,777.30
  6. Step 6: Final answer
    x = 30,185.39

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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.