Home / 28,373.66-39,137.90-20,403.26

Finding the Fourth Proportional to 28,373.66, 39,137.90 and 20,403.26

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Solution

The fourth proportional to 28,373.66, 39,137.90 and 20,403.26 is: 28,143.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,373.66 : 39,137.90 = 20,403.26 : x
  2. Step 2: Convert to fraction form
    28,373.66/39,137.90 = 20,403.26/x
  3. Step 3: Cross multiply
    28,373.66x = 39,137.90 × 20,403.26
  4. Step 4: Simplify right side
    28,373.66x = 798,540,749.55
  5. Step 5: Solve for x
    x = 798,540,749.55/28,373.66
  6. Step 6: Final answer
    x = 28,143.73

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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.