Home / 13,648.28-20,477.26-7,809.80

Finding the Fourth Proportional to 13,648.28, 20,477.26 and 7,809.80

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Solution

The fourth proportional to 13,648.28, 20,477.26 and 7,809.80 is: 11,717.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,648.28 : 20,477.26 = 7,809.80 : x
  2. Step 2: Convert to fraction form
    13,648.28/20,477.26 = 7,809.80/x
  3. Step 3: Cross multiply
    13,648.28x = 20,477.26 × 7,809.80
  4. Step 4: Simplify right side
    13,648.28x = 159,923,305.15
  5. Step 5: Solve for x
    x = 159,923,305.15/13,648.28
  6. Step 6: Final answer
    x = 11,717.47

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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.