Home / 11,725.37-16,181.01-6,420.18

Finding the Fourth Proportional to 11,725.37, 16,181.01 and 6,420.18

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Solution

The fourth proportional to 11,725.37, 16,181.01 and 6,420.18 is: 8,859.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,725.37 : 16,181.01 = 6,420.18 : x
  2. Step 2: Convert to fraction form
    11,725.37/16,181.01 = 6,420.18/x
  3. Step 3: Cross multiply
    11,725.37x = 16,181.01 × 6,420.18
  4. Step 4: Simplify right side
    11,725.37x = 103,884,996.78
  5. Step 5: Solve for x
    x = 103,884,996.78/11,725.37
  6. Step 6: Final answer
    x = 8,859.85

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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.