Home / 14,179.78-21,270.54-4,319.74

Finding the Fourth Proportional to 14,179.78, 21,270.54 and 4,319.74

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Solution

The fourth proportional to 14,179.78, 21,270.54 and 4,319.74 is: 6,479.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,179.78 : 21,270.54 = 4,319.74 : x
  2. Step 2: Convert to fraction form
    14,179.78/21,270.54 = 4,319.74/x
  3. Step 3: Cross multiply
    14,179.78x = 21,270.54 × 4,319.74
  4. Step 4: Simplify right side
    14,179.78x = 91,883,202.46
  5. Step 5: Solve for x
    x = 91,883,202.46/14,179.78
  6. Step 6: Final answer
    x = 6,479.88

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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.