Home / 20,018.64-30,019.40-6,872.34

Finding the Fourth Proportional to 20,018.64, 30,019.40 and 6,872.34

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Solution

The fourth proportional to 20,018.64, 30,019.40 and 6,872.34 is: 10,305.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.64 : 30,019.40 = 6,872.34 : x
  2. Step 2: Convert to fraction form
    20,018.64/30,019.40 = 6,872.34/x
  3. Step 3: Cross multiply
    20,018.64x = 30,019.40 × 6,872.34
  4. Step 4: Simplify right side
    20,018.64x = 206,303,523.40
  5. Step 5: Solve for x
    x = 206,303,523.40/20,018.64
  6. Step 6: Final answer
    x = 10,305.57

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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.