Home / 12,084.80-18,128.07-5,057.75

Finding the Fourth Proportional to 12,084.80, 18,128.07 and 5,057.75

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Solution

The fourth proportional to 12,084.80, 18,128.07 and 5,057.75 is: 7,586.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,084.80 : 18,128.07 = 5,057.75 : x
  2. Step 2: Convert to fraction form
    12,084.80/18,128.07 = 5,057.75/x
  3. Step 3: Cross multiply
    12,084.80x = 18,128.07 × 5,057.75
  4. Step 4: Simplify right side
    12,084.80x = 91,687,142.76
  5. Step 5: Solve for x
    x = 91,687,142.76/12,084.80
  6. Step 6: Final answer
    x = 7,586.98

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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.