Home / 39,681.76-54,761.24-21,777.92

Finding the Fourth Proportional to 39,681.76, 54,761.24 and 21,777.92

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Solution

The fourth proportional to 39,681.76, 54,761.24 and 21,777.92 is: 30,053.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,681.76 : 54,761.24 = 21,777.92 : x
  2. Step 2: Convert to fraction form
    39,681.76/54,761.24 = 21,777.92/x
  3. Step 3: Cross multiply
    39,681.76x = 54,761.24 × 21,777.92
  4. Step 4: Simplify right side
    39,681.76x = 1,192,585,794.93
  5. Step 5: Solve for x
    x = 1,192,585,794.93/39,681.76
  6. Step 6: Final answer
    x = 30,053.76

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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.