Home / 10,831.20-16,214.40-10,190.40

Finding the Fourth Proportional to 10,831.20, 16,214.40 and 10,190.40

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Solution

The fourth proportional to 10,831.20, 16,214.40 and 10,190.40 is: 15,255.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,831.20 : 16,214.40 = 10,190.40 : x
  2. Step 2: Convert to fraction form
    10,831.20/16,214.40 = 10,190.40/x
  3. Step 3: Cross multiply
    10,831.20x = 16,214.40 × 10,190.40
  4. Step 4: Simplify right side
    10,831.20x = 165,231,221.76
  5. Step 5: Solve for x
    x = 165,231,221.76/10,831.20
  6. Step 6: Final answer
    x = 15,255.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.