Home / 8,018.28-12,020.13-5,415.75

Finding the Fourth Proportional to 8,018.28, 12,020.13 and 5,415.75

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Solution

The fourth proportional to 8,018.28, 12,020.13 and 5,415.75 is: 8,118.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,018.28 : 12,020.13 = 5,415.75 : x
  2. Step 2: Convert to fraction form
    8,018.28/12,020.13 = 5,415.75/x
  3. Step 3: Cross multiply
    8,018.28x = 12,020.13 × 5,415.75
  4. Step 4: Simplify right side
    8,018.28x = 65,098,019.05
  5. Step 5: Solve for x
    x = 65,098,019.05/8,018.28
  6. Step 6: Final answer
    x = 8,118.70

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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.