Home / 20,761.61-31,148.36-10,234.77

Finding the Fourth Proportional to 20,761.61, 31,148.36 and 10,234.77

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Solution

The fourth proportional to 20,761.61, 31,148.36 and 10,234.77 is: 15,355.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.61 : 31,148.36 = 10,234.77 : x
  2. Step 2: Convert to fraction form
    20,761.61/31,148.36 = 10,234.77/x
  3. Step 3: Cross multiply
    20,761.61x = 31,148.36 × 10,234.77
  4. Step 4: Simplify right side
    20,761.61x = 318,796,249.30
  5. Step 5: Solve for x
    x = 318,796,249.30/20,761.61
  6. Step 6: Final answer
    x = 15,355.09

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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.