Home / 12,831.66-17,706.15-7,166.79

Finding the Fourth Proportional to 12,831.66, 17,706.15 and 7,166.79

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Solution

The fourth proportional to 12,831.66, 17,706.15 and 7,166.79 is: 9,889.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,831.66 : 17,706.15 = 7,166.79 : x
  2. Step 2: Convert to fraction form
    12,831.66/17,706.15 = 7,166.79/x
  3. Step 3: Cross multiply
    12,831.66x = 17,706.15 × 7,166.79
  4. Step 4: Simplify right side
    12,831.66x = 126,896,258.76
  5. Step 5: Solve for x
    x = 126,896,258.76/12,831.66
  6. Step 6: Final answer
    x = 9,889.31

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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.