Home / 11,725.26-16,180.86-6,420.41

Finding the Fourth Proportional to 11,725.26, 16,180.86 and 6,420.41

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Solution

The fourth proportional to 11,725.26, 16,180.86 and 6,420.41 is: 8,860.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,725.26 : 16,180.86 = 6,420.41 : x
  2. Step 2: Convert to fraction form
    11,725.26/16,180.86 = 6,420.41/x
  3. Step 3: Cross multiply
    11,725.26x = 16,180.86 × 6,420.41
  4. Step 4: Simplify right side
    11,725.26x = 103,887,674.45
  5. Step 5: Solve for x
    x = 103,887,674.45/11,725.26
  6. Step 6: Final answer
    x = 8,860.16

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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.