Home / 13,755.04-20,617.20-12,647.92

Finding the Fourth Proportional to 13,755.04, 20,617.20 and 12,647.92

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Solution

The fourth proportional to 13,755.04, 20,617.20 and 12,647.92 is: 18,957.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.04 : 20,617.20 = 12,647.92 : x
  2. Step 2: Convert to fraction form
    13,755.04/20,617.20 = 12,647.92/x
  3. Step 3: Cross multiply
    13,755.04x = 20,617.20 × 12,647.92
  4. Step 4: Simplify right side
    13,755.04x = 260,764,696.22
  5. Step 5: Solve for x
    x = 260,764,696.22/13,755.04
  6. Step 6: Final answer
    x = 18,957.76

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1.5x scale

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.