Home / 12,636.74-18,955.11-3,870.53

Finding the Fourth Proportional to 12,636.74, 18,955.11 and 3,870.53

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Solution

The fourth proportional to 12,636.74, 18,955.11 and 3,870.53 is: 5,805.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.74 : 18,955.11 = 3,870.53 : x
  2. Step 2: Convert to fraction form
    12,636.74/18,955.11 = 3,870.53/x
  3. Step 3: Cross multiply
    12,636.74x = 18,955.11 × 3,870.53
  4. Step 4: Simplify right side
    12,636.74x = 73,366,321.91
  5. Step 5: Solve for x
    x = 73,366,321.91/12,636.74
  6. Step 6: Final answer
    x = 5,805.80

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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.