Home / 12,661.04-18,989.32-3,427.76

Finding the Fourth Proportional to 12,661.04, 18,989.32 and 3,427.76

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Solution

The fourth proportional to 12,661.04, 18,989.32 and 3,427.76 is: 5,141.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.04 : 18,989.32 = 3,427.76 : x
  2. Step 2: Convert to fraction form
    12,661.04/18,989.32 = 3,427.76/x
  3. Step 3: Cross multiply
    12,661.04x = 18,989.32 × 3,427.76
  4. Step 4: Simplify right side
    12,661.04x = 65,090,831.52
  5. Step 5: Solve for x
    x = 65,090,831.52/12,661.04
  6. Step 6: Final answer
    x = 5,141.03

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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.