Home / 18,140.80-27,209.92-4,992.16

Finding the Fourth Proportional to 18,140.80, 27,209.92 and 4,992.16

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Solution

The fourth proportional to 18,140.80, 27,209.92 and 4,992.16 is: 7,487.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,140.80 : 27,209.92 = 4,992.16 : x
  2. Step 2: Convert to fraction form
    18,140.80/27,209.92 = 4,992.16/x
  3. Step 3: Cross multiply
    18,140.80x = 27,209.92 × 4,992.16
  4. Step 4: Simplify right side
    18,140.80x = 135,836,274.23
  5. Step 5: Solve for x
    x = 135,836,274.23/18,140.80
  6. Step 6: Final answer
    x = 7,487.89

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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.