Home / 38,511.75-53,146.22-20,847.75

Finding the Fourth Proportional to 38,511.75, 53,146.22 and 20,847.75

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Solution

The fourth proportional to 38,511.75, 53,146.22 and 20,847.75 is: 28,769.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,511.75 : 53,146.22 = 20,847.75 : x
  2. Step 2: Convert to fraction form
    38,511.75/53,146.22 = 20,847.75/x
  3. Step 3: Cross multiply
    38,511.75x = 53,146.22 × 20,847.75
  4. Step 4: Simplify right side
    38,511.75x = 1,107,979,108.01
  5. Step 5: Solve for x
    x = 1,107,979,108.01/38,511.75
  6. Step 6: Final answer
    x = 28,769.90

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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.