Home / 20,872.26-31,293.48-9,772.86

Finding the Fourth Proportional to 20,872.26, 31,293.48 and 9,772.86

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Solution

The fourth proportional to 20,872.26, 31,293.48 and 9,772.86 is: 14,652.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,872.26 : 31,293.48 = 9,772.86 : x
  2. Step 2: Convert to fraction form
    20,872.26/31,293.48 = 9,772.86/x
  3. Step 3: Cross multiply
    20,872.26x = 31,293.48 × 9,772.86
  4. Step 4: Simplify right side
    20,872.26x = 305,826,798.95
  5. Step 5: Solve for x
    x = 305,826,798.95/20,872.26
  6. Step 6: Final answer
    x = 14,652.31

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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.