Home / 20,018.16-30,028.32-8,332.56

Finding the Fourth Proportional to 20,018.16, 30,028.32 and 8,332.56

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Solution

The fourth proportional to 20,018.16, 30,028.32 and 8,332.56 is: 12,499.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.16 : 30,028.32 = 8,332.56 : x
  2. Step 2: Convert to fraction form
    20,018.16/30,028.32 = 8,332.56/x
  3. Step 3: Cross multiply
    20,018.16x = 30,028.32 × 8,332.56
  4. Step 4: Simplify right side
    20,018.16x = 250,212,778.10
  5. Step 5: Solve for x
    x = 250,212,778.10/20,018.16
  6. Step 6: Final answer
    x = 12,499.29

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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.