Home / 13,929.98-20,910.15-5,615.73

Finding the Fourth Proportional to 13,929.98, 20,910.15 and 5,615.73

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Solution

The fourth proportional to 13,929.98, 20,910.15 and 5,615.73 is: 8,429.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.98 : 20,910.15 = 5,615.73 : x
  2. Step 2: Convert to fraction form
    13,929.98/20,910.15 = 5,615.73/x
  3. Step 3: Cross multiply
    13,929.98x = 20,910.15 × 5,615.73
  4. Step 4: Simplify right side
    13,929.98x = 117,425,756.66
  5. Step 5: Solve for x
    x = 117,425,756.66/13,929.98
  6. Step 6: Final answer
    x = 8,429.72

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1.5x scale

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.