Home / 12,200.98-16,831.16-7,717.18

Finding the Fourth Proportional to 12,200.98, 16,831.16 and 7,717.18

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Solution

The fourth proportional to 12,200.98, 16,831.16 and 7,717.18 is: 10,645.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,200.98 : 16,831.16 = 7,717.18 : x
  2. Step 2: Convert to fraction form
    12,200.98/16,831.16 = 7,717.18/x
  3. Step 3: Cross multiply
    12,200.98x = 16,831.16 × 7,717.18
  4. Step 4: Simplify right side
    12,200.98x = 129,889,091.33
  5. Step 5: Solve for x
    x = 129,889,091.33/12,200.98
  6. Step 6: Final answer
    x = 10,645.79

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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.