Home / 20,707.36-31,040.79-8,223.24

Finding the Fourth Proportional to 20,707.36, 31,040.79 and 8,223.24

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Solution

The fourth proportional to 20,707.36, 31,040.79 and 8,223.24 is: 12,326.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.36 : 31,040.79 = 8,223.24 : x
  2. Step 2: Convert to fraction form
    20,707.36/31,040.79 = 8,223.24/x
  3. Step 3: Cross multiply
    20,707.36x = 31,040.79 × 8,223.24
  4. Step 4: Simplify right side
    20,707.36x = 255,255,865.96
  5. Step 5: Solve for x
    x = 255,255,865.96/20,707.36
  6. Step 6: Final answer
    x = 12,326.82

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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.