Home / 20,012.06-30,018.10-5,220.96

Finding the Fourth Proportional to 20,012.06, 30,018.10 and 5,220.96

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Solution

The fourth proportional to 20,012.06, 30,018.10 and 5,220.96 is: 7,831.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,012.06 : 30,018.10 = 5,220.96 : x
  2. Step 2: Convert to fraction form
    20,012.06/30,018.10 = 5,220.96/x
  3. Step 3: Cross multiply
    20,012.06x = 30,018.10 × 5,220.96
  4. Step 4: Simplify right side
    20,012.06x = 156,723,299.38
  5. Step 5: Solve for x
    x = 156,723,299.38/20,012.06
  6. Step 6: Final answer
    x = 7,831.44

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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.