Home / 18,761.58-28,145.79-6,280.38

Finding the Fourth Proportional to 18,761.58, 28,145.79 and 6,280.38

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Solution

The fourth proportional to 18,761.58, 28,145.79 and 6,280.38 is: 9,421.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,761.58 : 28,145.79 = 6,280.38 : x
  2. Step 2: Convert to fraction form
    18,761.58/28,145.79 = 6,280.38/x
  3. Step 3: Cross multiply
    18,761.58x = 28,145.79 × 6,280.38
  4. Step 4: Simplify right side
    18,761.58x = 176,766,256.60
  5. Step 5: Solve for x
    x = 176,766,256.60/18,761.58
  6. Step 6: Final answer
    x = 9,421.71

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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.