Home / 15,831.07-21,847.11-8,757.46

Finding the Fourth Proportional to 15,831.07, 21,847.11 and 8,757.46

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Solution

The fourth proportional to 15,831.07, 21,847.11 and 8,757.46 is: 12,085.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,831.07 : 21,847.11 = 8,757.46 : x
  2. Step 2: Convert to fraction form
    15,831.07/21,847.11 = 8,757.46/x
  3. Step 3: Cross multiply
    15,831.07x = 21,847.11 × 8,757.46
  4. Step 4: Simplify right side
    15,831.07x = 191,325,191.94
  5. Step 5: Solve for x
    x = 191,325,191.94/15,831.07
  6. Step 6: Final answer
    x = 12,085.42

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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.