Home / 11,220.80-16,831.20-7,073.60

Finding the Fourth Proportional to 11,220.80, 16,831.20 and 7,073.60

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Solution

The fourth proportional to 11,220.80, 16,831.20 and 7,073.60 is: 10,610.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.80 : 16,831.20 = 7,073.60 : x
  2. Step 2: Convert to fraction form
    11,220.80/16,831.20 = 7,073.60/x
  3. Step 3: Cross multiply
    11,220.80x = 16,831.20 × 7,073.60
  4. Step 4: Simplify right side
    11,220.80x = 119,057,176.32
  5. Step 5: Solve for x
    x = 119,057,176.32/11,220.80
  6. Step 6: Final answer
    x = 10,610.40

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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.