Home / 20,917.22-31,377.26-8,437.34

Finding the Fourth Proportional to 20,917.22, 31,377.26 and 8,437.34

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Solution

The fourth proportional to 20,917.22, 31,377.26 and 8,437.34 is: 12,656.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.22 : 31,377.26 = 8,437.34 : x
  2. Step 2: Convert to fraction form
    20,917.22/31,377.26 = 8,437.34/x
  3. Step 3: Cross multiply
    20,917.22x = 31,377.26 × 8,437.34
  4. Step 4: Simplify right side
    20,917.22x = 264,740,710.42
  5. Step 5: Solve for x
    x = 264,740,710.42/20,917.22
  6. Step 6: Final answer
    x = 12,656.59

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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.