Home / 11,724.72-16,180.48-6,420.04

Finding the Fourth Proportional to 11,724.72, 16,180.48 and 6,420.04

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Solution

The fourth proportional to 11,724.72, 16,180.48 and 6,420.04 is: 8,859.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,724.72 : 16,180.48 = 6,420.04 : x
  2. Step 2: Convert to fraction form
    11,724.72/16,180.48 = 6,420.04/x
  3. Step 3: Cross multiply
    11,724.72x = 16,180.48 × 6,420.04
  4. Step 4: Simplify right side
    11,724.72x = 103,879,328.82
  5. Step 5: Solve for x
    x = 103,879,328.82/11,724.72
  6. Step 6: Final answer
    x = 8,859.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.