Home / 13,617.06-20,420.32-5,295.95

Finding the Fourth Proportional to 13,617.06, 20,420.32 and 5,295.95

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Solution

The fourth proportional to 13,617.06, 20,420.32 and 5,295.95 is: 7,941.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.06 : 20,420.32 = 5,295.95 : x
  2. Step 2: Convert to fraction form
    13,617.06/20,420.32 = 5,295.95/x
  3. Step 3: Cross multiply
    13,617.06x = 20,420.32 × 5,295.95
  4. Step 4: Simplify right side
    13,617.06x = 108,144,993.70
  5. Step 5: Solve for x
    x = 108,144,993.70/13,617.06
  6. Step 6: Final answer
    x = 7,941.88

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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.