Home / 39,681.12-54,760.62-21,777.80

Finding the Fourth Proportional to 39,681.12, 54,760.62 and 21,777.80

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Solution

The fourth proportional to 39,681.12, 54,760.62 and 21,777.80 is: 30,053.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,681.12 : 54,760.62 = 21,777.80 : x
  2. Step 2: Convert to fraction form
    39,681.12/54,760.62 = 21,777.80/x
  3. Step 3: Cross multiply
    39,681.12x = 54,760.62 × 21,777.80
  4. Step 4: Simplify right side
    39,681.12x = 1,192,565,830.24
  5. Step 5: Solve for x
    x = 1,192,565,830.24/39,681.12
  6. Step 6: Final answer
    x = 30,053.73

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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.