Home / 28,342.38-39,117.90-18,765.38

Finding the Fourth Proportional to 28,342.38, 39,117.90 and 18,765.38

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Solution

The fourth proportional to 28,342.38, 39,117.90 and 18,765.38 is: 25,899.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,342.38 : 39,117.90 = 18,765.38 : x
  2. Step 2: Convert to fraction form
    28,342.38/39,117.90 = 18,765.38/x
  3. Step 3: Cross multiply
    28,342.38x = 39,117.90 × 18,765.38
  4. Step 4: Simplify right side
    28,342.38x = 734,062,258.30
  5. Step 5: Solve for x
    x = 734,062,258.30/28,342.38
  6. Step 6: Final answer
    x = 25,899.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.