Home / 13,681.11-20,518.02-3,818.66

Finding the Fourth Proportional to 13,681.11, 20,518.02 and 3,818.66

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Solution

The fourth proportional to 13,681.11, 20,518.02 and 3,818.66 is: 5,726.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681.11 : 20,518.02 = 3,818.66 : x
  2. Step 2: Convert to fraction form
    13,681.11/20,518.02 = 3,818.66/x
  3. Step 3: Cross multiply
    13,681.11x = 20,518.02 × 3,818.66
  4. Step 4: Simplify right side
    13,681.11x = 78,351,342.25
  5. Step 5: Solve for x
    x = 78,351,342.25/13,681.11
  6. Step 6: Final answer
    x = 5,726.97

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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.