Home / 12,440.74-18,660.43-5,043.21

Finding the Fourth Proportional to 12,440.74, 18,660.43 and 5,043.21

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Solution

The fourth proportional to 12,440.74, 18,660.43 and 5,043.21 is: 7,564.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440.74 : 18,660.43 = 5,043.21 : x
  2. Step 2: Convert to fraction form
    12,440.74/18,660.43 = 5,043.21/x
  3. Step 3: Cross multiply
    12,440.74x = 18,660.43 × 5,043.21
  4. Step 4: Simplify right side
    12,440.74x = 94,108,480.10
  5. Step 5: Solve for x
    x = 94,108,480.10/12,440.74
  6. Step 6: Final answer
    x = 7,564.54

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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.