Home / 13,821.78-20,729.76-4,462.66

Finding the Fourth Proportional to 13,821.78, 20,729.76 and 4,462.66

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Solution

The fourth proportional to 13,821.78, 20,729.76 and 4,462.66 is: 6,693.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.78 : 20,729.76 = 4,462.66 : x
  2. Step 2: Convert to fraction form
    13,821.78/20,729.76 = 4,462.66/x
  3. Step 3: Cross multiply
    13,821.78x = 20,729.76 × 4,462.66
  4. Step 4: Simplify right side
    13,821.78x = 92,509,870.76
  5. Step 5: Solve for x
    x = 92,509,870.76/13,821.78
  6. Step 6: Final answer
    x = 6,693.05

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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.