Home / 14,118.91-21,180.32-4,761.61

Finding the Fourth Proportional to 14,118.91, 21,180.32 and 4,761.61

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Solution

The fourth proportional to 14,118.91, 21,180.32 and 4,761.61 is: 7,143.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,118.91 : 21,180.32 = 4,761.61 : x
  2. Step 2: Convert to fraction form
    14,118.91/21,180.32 = 4,761.61/x
  3. Step 3: Cross multiply
    14,118.91x = 21,180.32 × 4,761.61
  4. Step 4: Simplify right side
    14,118.91x = 100,852,293.81
  5. Step 5: Solve for x
    x = 100,852,293.81/14,118.91
  6. Step 6: Final answer
    x = 7,143.07

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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.