Home / 20,777.45-31,171.50-5,987.52

Finding the Fourth Proportional to 20,777.45, 31,171.50 and 5,987.52

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Solution

The fourth proportional to 20,777.45, 31,171.50 and 5,987.52 is: 8,982.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.45 : 31,171.50 = 5,987.52 : x
  2. Step 2: Convert to fraction form
    20,777.45/31,171.50 = 5,987.52/x
  3. Step 3: Cross multiply
    20,777.45x = 31,171.50 × 5,987.52
  4. Step 4: Simplify right side
    20,777.45x = 186,639,979.68
  5. Step 5: Solve for x
    x = 186,639,979.68/20,777.45
  6. Step 6: Final answer
    x = 8,982.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.