Home / 14,515.20-21,780-5,749.92

Finding the Fourth Proportional to 14,515.20, 21,780 and 5,749.92

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Solution

The fourth proportional to 14,515.20, 21,780 and 5,749.92 is: 8,627.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,515.20 : 21,780 = 5,749.92 : x
  2. Step 2: Convert to fraction form
    14,515.20/21,780 = 5,749.92/x
  3. Step 3: Cross multiply
    14,515.20x = 21,780 × 5,749.92
  4. Step 4: Simplify right side
    14,515.20x = 125,233,257.60
  5. Step 5: Solve for x
    x = 125,233,257.60/14,515.20
  6. Step 6: Final answer
    x = 8,627.73

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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.