Home / 28,148.76-42,163.50-18,258.60

Finding the Fourth Proportional to 28,148.76, 42,163.50 and 18,258.60

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Solution

The fourth proportional to 28,148.76, 42,163.50 and 18,258.60 is: 27,349.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.76 : 42,163.50 = 18,258.60 : x
  2. Step 2: Convert to fraction form
    28,148.76/42,163.50 = 18,258.60/x
  3. Step 3: Cross multiply
    28,148.76x = 42,163.50 × 18,258.60
  4. Step 4: Simplify right side
    28,148.76x = 769,846,481.10
  5. Step 5: Solve for x
    x = 769,846,481.10/28,148.76
  6. Step 6: Final answer
    x = 27,349.21

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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.