Home / 20,018.10-30,027.78-6,870.30

Finding the Fourth Proportional to 20,018.10, 30,027.78 and 6,870.30

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Solution

The fourth proportional to 20,018.10, 30,027.78 and 6,870.30 is: 10,305.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.10 : 30,027.78 = 6,870.30 : x
  2. Step 2: Convert to fraction form
    20,018.10/30,027.78 = 6,870.30/x
  3. Step 3: Cross multiply
    20,018.10x = 30,027.78 × 6,870.30
  4. Step 4: Simplify right side
    20,018.10x = 206,299,856.93
  5. Step 5: Solve for x
    x = 206,299,856.93/20,018.10
  6. Step 6: Final answer
    x = 10,305.67

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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.