Home / 20,669.50-31,004.25-5,087.13

Finding the Fourth Proportional to 20,669.50, 31,004.25 and 5,087.13

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Solution

The fourth proportional to 20,669.50, 31,004.25 and 5,087.13 is: 7,630.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.50 : 31,004.25 = 5,087.13 : x
  2. Step 2: Convert to fraction form
    20,669.50/31,004.25 = 5,087.13/x
  3. Step 3: Cross multiply
    20,669.50x = 31,004.25 × 5,087.13
  4. Step 4: Simplify right side
    20,669.50x = 157,722,650.30
  5. Step 5: Solve for x
    x = 157,722,650.30/20,669.50
  6. Step 6: Final answer
    x = 7,630.70

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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.