Home / 20,792.05-31,188.03-8,314.99

Finding the Fourth Proportional to 20,792.05, 31,188.03 and 8,314.99

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Solution

The fourth proportional to 20,792.05, 31,188.03 and 8,314.99 is: 12,472.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.05 : 31,188.03 = 8,314.99 : x
  2. Step 2: Convert to fraction form
    20,792.05/31,188.03 = 8,314.99/x
  3. Step 3: Cross multiply
    20,792.05x = 31,188.03 × 8,314.99
  4. Step 4: Simplify right side
    20,792.05x = 259,328,048.42
  5. Step 5: Solve for x
    x = 259,328,048.42/20,792.05
  6. Step 6: Final answer
    x = 12,472.46

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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.