Home / 12,142.04-18,209.19-4,744.70

Finding the Fourth Proportional to 12,142.04, 18,209.19 and 4,744.70

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Solution

The fourth proportional to 12,142.04, 18,209.19 and 4,744.70 is: 7,115.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,142.04 : 18,209.19 = 4,744.70 : x
  2. Step 2: Convert to fraction form
    12,142.04/18,209.19 = 4,744.70/x
  3. Step 3: Cross multiply
    12,142.04x = 18,209.19 × 4,744.70
  4. Step 4: Simplify right side
    12,142.04x = 86,397,143.79
  5. Step 5: Solve for x
    x = 86,397,143.79/12,142.04
  6. Step 6: Final answer
    x = 7,115.54

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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.