Home / 12,636.19-18,955.50-3,869.56

Finding the Fourth Proportional to 12,636.19, 18,955.50 and 3,869.56

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Solution

The fourth proportional to 12,636.19, 18,955.50 and 3,869.56 is: 5,804.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.19 : 18,955.50 = 3,869.56 : x
  2. Step 2: Convert to fraction form
    12,636.19/18,955.50 = 3,869.56/x
  3. Step 3: Cross multiply
    12,636.19x = 18,955.50 × 3,869.56
  4. Step 4: Simplify right side
    12,636.19x = 73,349,444.58
  5. Step 5: Solve for x
    x = 73,349,444.58/12,636.19
  6. Step 6: Final answer
    x = 5,804.71

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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.