Home / 11,725.38-16,181.01-6,420.18

Finding the Fourth Proportional to 11,725.38, 16,181.01 and 6,420.18

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Solution

The fourth proportional to 11,725.38, 16,181.01 and 6,420.18 is: 8,859.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,725.38 : 16,181.01 = 6,420.18 : x
  2. Step 2: Convert to fraction form
    11,725.38/16,181.01 = 6,420.18/x
  3. Step 3: Cross multiply
    11,725.38x = 16,181.01 × 6,420.18
  4. Step 4: Simplify right side
    11,725.38x = 103,884,996.78
  5. Step 5: Solve for x
    x = 103,884,996.78/11,725.38
  6. Step 6: Final answer
    x = 8,859.84

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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.