Home / 18,518.80-27,777.24-4,667.92

Finding the Fourth Proportional to 18,518.80, 27,777.24 and 4,667.92

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Solution

The fourth proportional to 18,518.80, 27,777.24 and 4,667.92 is: 7,001.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.80 : 27,777.24 = 4,667.92 : x
  2. Step 2: Convert to fraction form
    18,518.80/27,777.24 = 4,667.92/x
  3. Step 3: Cross multiply
    18,518.80x = 27,777.24 × 4,667.92
  4. Step 4: Simplify right side
    18,518.80x = 129,661,934.14
  5. Step 5: Solve for x
    x = 129,661,934.14/18,518.80
  6. Step 6: Final answer
    x = 7,001.64

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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.