Home / 13,587.68-20,374.80-4,821.36

Finding the Fourth Proportional to 13,587.68, 20,374.80 and 4,821.36

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Solution

The fourth proportional to 13,587.68, 20,374.80 and 4,821.36 is: 7,229.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.68 : 20,374.80 = 4,821.36 : x
  2. Step 2: Convert to fraction form
    13,587.68/20,374.80 = 4,821.36/x
  3. Step 3: Cross multiply
    13,587.68x = 20,374.80 × 4,821.36
  4. Step 4: Simplify right side
    13,587.68x = 98,234,245.73
  5. Step 5: Solve for x
    x = 98,234,245.73/13,587.68
  6. Step 6: Final answer
    x = 7,229.66

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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.