Home / 39,777.12-54,893.85-21,873.51

Finding the Fourth Proportional to 39,777.12, 54,893.85 and 21,873.51

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Solution

The fourth proportional to 39,777.12, 54,893.85 and 21,873.51 is: 30,186.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,777.12 : 54,893.85 = 21,873.51 : x
  2. Step 2: Convert to fraction form
    39,777.12/54,893.85 = 21,873.51/x
  3. Step 3: Cross multiply
    39,777.12x = 54,893.85 × 21,873.51
  4. Step 4: Simplify right side
    39,777.12x = 1,200,721,176.91
  5. Step 5: Solve for x
    x = 1,200,721,176.91/39,777.12
  6. Step 6: Final answer
    x = 30,186.23

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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.