Home / 12,831.93-17,706.80-7,166.22

Finding the Fourth Proportional to 12,831.93, 17,706.80 and 7,166.22

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Solution

The fourth proportional to 12,831.93, 17,706.80 and 7,166.22 is: 9,888.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,831.93 : 17,706.80 = 7,166.22 : x
  2. Step 2: Convert to fraction form
    12,831.93/17,706.80 = 7,166.22/x
  3. Step 3: Cross multiply
    12,831.93x = 17,706.80 × 7,166.22
  4. Step 4: Simplify right side
    12,831.93x = 126,890,788.46
  5. Step 5: Solve for x
    x = 126,890,788.46/12,831.93
  6. Step 6: Final answer
    x = 9,888.68

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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.