Home / 13,415.70-20,115.45-6,018.78

Finding the Fourth Proportional to 13,415.70, 20,115.45 and 6,018.78

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Solution

The fourth proportional to 13,415.70, 20,115.45 and 6,018.78 is: 9,024.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.70 : 20,115.45 = 6,018.78 : x
  2. Step 2: Convert to fraction form
    13,415.70/20,115.45 = 6,018.78/x
  3. Step 3: Cross multiply
    13,415.70x = 20,115.45 × 6,018.78
  4. Step 4: Simplify right side
    13,415.70x = 121,070,468.15
  5. Step 5: Solve for x
    x = 121,070,468.15/13,415.70
  6. Step 6: Final answer
    x = 9,024.54

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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.