Home / 14,420.20-21,631.74-5,185

Finding the Fourth Proportional to 14,420.20, 21,631.74 and 5,185

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Solution

The fourth proportional to 14,420.20, 21,631.74 and 5,185 is: 7,778.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,420.20 : 21,631.74 = 5,185 : x
  2. Step 2: Convert to fraction form
    14,420.20/21,631.74 = 5,185/x
  3. Step 3: Cross multiply
    14,420.20x = 21,631.74 × 5,185
  4. Step 4: Simplify right side
    14,420.20x = 112,160,571.90
  5. Step 5: Solve for x
    x = 112,160,571.90/14,420.20
  6. Step 6: Final answer
    x = 7,778.02

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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.