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Finding the Fourth Proportional to 14,340.76, 21,512.76 and 4,479.82

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Solution

The fourth proportional to 14,340.76, 21,512.76 and 4,479.82 is: 6,720.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,340.76 : 21,512.76 = 4,479.82 : x
  2. Step 2: Convert to fraction form
    14,340.76/21,512.76 = 4,479.82/x
  3. Step 3: Cross multiply
    14,340.76x = 21,512.76 × 4,479.82
  4. Step 4: Simplify right side
    14,340.76x = 96,373,292.50
  5. Step 5: Solve for x
    x = 96,373,292.50/14,340.76
  6. Step 6: Final answer
    x = 6,720.24

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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.