Home / 20,437.12-30,650.82-5,645.71

Finding the Fourth Proportional to 20,437.12, 30,650.82 and 5,645.71

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Solution

The fourth proportional to 20,437.12, 30,650.82 and 5,645.71 is: 8,467.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.12 : 30,650.82 = 5,645.71 : x
  2. Step 2: Convert to fraction form
    20,437.12/30,650.82 = 5,645.71/x
  3. Step 3: Cross multiply
    20,437.12x = 30,650.82 × 5,645.71
  4. Step 4: Simplify right side
    20,437.12x = 173,045,640.98
  5. Step 5: Solve for x
    x = 173,045,640.98/20,437.12
  6. Step 6: Final answer
    x = 8,467.22

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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.