Home / 39,777.84-54,891.54-21,873.60

Finding the Fourth Proportional to 39,777.84, 54,891.54 and 21,873.60

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Solution

The fourth proportional to 39,777.84, 54,891.54 and 21,873.60 is: 30,184.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,777.84 : 54,891.54 = 21,873.60 : x
  2. Step 2: Convert to fraction form
    39,777.84/54,891.54 = 21,873.60/x
  3. Step 3: Cross multiply
    39,777.84x = 54,891.54 × 21,873.60
  4. Step 4: Simplify right side
    39,777.84x = 1,200,675,589.34
  5. Step 5: Solve for x
    x = 1,200,675,589.34/39,777.84
  6. Step 6: Final answer
    x = 30,184.53

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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.