Home / 11,725.23-16,180.91-6,420.09

Finding the Fourth Proportional to 11,725.23, 16,180.91 and 6,420.09

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Solution

The fourth proportional to 11,725.23, 16,180.91 and 6,420.09 is: 8,859.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,725.23 : 16,180.91 = 6,420.09 : x
  2. Step 2: Convert to fraction form
    11,725.23/16,180.91 = 6,420.09/x
  3. Step 3: Cross multiply
    11,725.23x = 16,180.91 × 6,420.09
  4. Step 4: Simplify right side
    11,725.23x = 103,882,898.48
  5. Step 5: Solve for x
    x = 103,882,898.48/11,725.23
  6. Step 6: Final answer
    x = 8,859.77

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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.