Home / 18,871.41-28,307.39-7,185.27

Finding the Fourth Proportional to 18,871.41, 28,307.39 and 7,185.27

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Solution

The fourth proportional to 18,871.41, 28,307.39 and 7,185.27 is: 10,778.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,871.41 : 28,307.39 = 7,185.27 : x
  2. Step 2: Convert to fraction form
    18,871.41/28,307.39 = 7,185.27/x
  3. Step 3: Cross multiply
    18,871.41x = 28,307.39 × 7,185.27
  4. Step 4: Simplify right side
    18,871.41x = 203,396,204.22
  5. Step 5: Solve for x
    x = 203,396,204.22/18,871.41
  6. Step 6: Final answer
    x = 10,778.01

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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.