Home / 12,411.24-18,619.74-4,091.28

Finding the Fourth Proportional to 12,411.24, 18,619.74 and 4,091.28

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Solution

The fourth proportional to 12,411.24, 18,619.74 and 4,091.28 is: 6,137.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,411.24 : 18,619.74 = 4,091.28 : x
  2. Step 2: Convert to fraction form
    12,411.24/18,619.74 = 4,091.28/x
  3. Step 3: Cross multiply
    12,411.24x = 18,619.74 × 4,091.28
  4. Step 4: Simplify right side
    12,411.24x = 76,178,569.87
  5. Step 5: Solve for x
    x = 76,178,569.87/12,411.24
  6. Step 6: Final answer
    x = 6,137.87

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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.