Home / 15,831.57-21,847.80-8,757.96

Finding the Fourth Proportional to 15,831.57, 21,847.80 and 8,757.96

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Solution

The fourth proportional to 15,831.57, 21,847.80 and 8,757.96 is: 12,086.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,831.57 : 21,847.80 = 8,757.96 : x
  2. Step 2: Convert to fraction form
    15,831.57/21,847.80 = 8,757.96/x
  3. Step 3: Cross multiply
    15,831.57x = 21,847.80 × 8,757.96
  4. Step 4: Simplify right side
    15,831.57x = 191,342,158.49
  5. Step 5: Solve for x
    x = 191,342,158.49/15,831.57
  6. Step 6: Final answer
    x = 12,086.11

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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.