Home / 11,221.34-16,831.94-3,430.16

Finding the Fourth Proportional to 11,221.34, 16,831.94 and 3,430.16

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Solution

The fourth proportional to 11,221.34, 16,831.94 and 3,430.16 is: 5,145.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.34 : 16,831.94 = 3,430.16 : x
  2. Step 2: Convert to fraction form
    11,221.34/16,831.94 = 3,430.16/x
  3. Step 3: Cross multiply
    11,221.34x = 16,831.94 × 3,430.16
  4. Step 4: Simplify right side
    11,221.34x = 57,736,146.00
  5. Step 5: Solve for x
    x = 57,736,146.00/11,221.34
  6. Step 6: Final answer
    x = 5,145.21

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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.