Home / 13,635.72-20,455.62-4,273.65

Finding the Fourth Proportional to 13,635.72, 20,455.62 and 4,273.65

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Solution

The fourth proportional to 13,635.72, 20,455.62 and 4,273.65 is: 6,411.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,635.72 : 20,455.62 = 4,273.65 : x
  2. Step 2: Convert to fraction form
    13,635.72/20,455.62 = 4,273.65/x
  3. Step 3: Cross multiply
    13,635.72x = 20,455.62 × 4,273.65
  4. Step 4: Simplify right side
    13,635.72x = 87,420,058.13
  5. Step 5: Solve for x
    x = 87,420,058.13/13,635.72
  6. Step 6: Final answer
    x = 6,411.11

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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.