Home / 20,777.07-31,166.09-5,986.35

Finding the Fourth Proportional to 20,777.07, 31,166.09 and 5,986.35

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Solution

The fourth proportional to 20,777.07, 31,166.09 and 5,986.35 is: 8,979.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.07 : 31,166.09 = 5,986.35 : x
  2. Step 2: Convert to fraction form
    20,777.07/31,166.09 = 5,986.35/x
  3. Step 3: Cross multiply
    20,777.07x = 31,166.09 × 5,986.35
  4. Step 4: Simplify right side
    20,777.07x = 186,571,092.94
  5. Step 5: Solve for x
    x = 186,571,092.94/20,777.07
  6. Step 6: Final answer
    x = 8,979.66

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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.