Home / 39,777.66-54,894.51-21,873.42

Finding the Fourth Proportional to 39,777.66, 54,894.51 and 21,873.42

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Solution

The fourth proportional to 39,777.66, 54,894.51 and 21,873.42 is: 30,186.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,777.66 : 54,894.51 = 21,873.42 : x
  2. Step 2: Convert to fraction form
    39,777.66/54,894.51 = 21,873.42/x
  3. Step 3: Cross multiply
    39,777.66x = 54,894.51 × 21,873.42
  4. Step 4: Simplify right side
    39,777.66x = 1,200,730,672.92
  5. Step 5: Solve for x
    x = 1,200,730,672.92/39,777.66
  6. Step 6: Final answer
    x = 30,186.06

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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.