Home / 20,745.86-31,098.54-8,262.14

Finding the Fourth Proportional to 20,745.86, 31,098.54 and 8,262.14

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Solution

The fourth proportional to 20,745.86, 31,098.54 and 8,262.14 is: 12,385.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.86 : 31,098.54 = 8,262.14 : x
  2. Step 2: Convert to fraction form
    20,745.86/31,098.54 = 8,262.14/x
  3. Step 3: Cross multiply
    20,745.86x = 31,098.54 × 8,262.14
  4. Step 4: Simplify right side
    20,745.86x = 256,940,491.28
  5. Step 5: Solve for x
    x = 256,940,491.28/20,745.86
  6. Step 6: Final answer
    x = 12,385.15

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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.