Home / 13,133.04-18,121.92-8,665.44

Finding the Fourth Proportional to 13,133.04, 18,121.92 and 8,665.44

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Solution

The fourth proportional to 13,133.04, 18,121.92 and 8,665.44 is: 11,957.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.04 : 18,121.92 = 8,665.44 : x
  2. Step 2: Convert to fraction form
    13,133.04/18,121.92 = 8,665.44/x
  3. Step 3: Cross multiply
    13,133.04x = 18,121.92 × 8,665.44
  4. Step 4: Simplify right side
    13,133.04x = 157,034,410.44
  5. Step 5: Solve for x
    x = 157,034,410.44/13,133.04
  6. Step 6: Final answer
    x = 11,957.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.