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Finding the Fourth Proportional to 15,831.33, 21,846.33 and 8,757.33

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Solution

The fourth proportional to 15,831.33, 21,846.33 and 8,757.33 is: 12,084.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,831.33 : 21,846.33 = 8,757.33 : x
  2. Step 2: Convert to fraction form
    15,831.33/21,846.33 = 8,757.33/x
  3. Step 3: Cross multiply
    15,831.33x = 21,846.33 × 8,757.33
  4. Step 4: Simplify right side
    15,831.33x = 191,315,521.10
  5. Step 5: Solve for x
    x = 191,315,521.10/15,831.33
  6. Step 6: Final answer
    x = 12,084.61

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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.