Home / 11,725.36-16,180.96-6,420.13

Finding the Fourth Proportional to 11,725.36, 16,180.96 and 6,420.13

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Solution

The fourth proportional to 11,725.36, 16,180.96 and 6,420.13 is: 8,859.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,725.36 : 16,180.96 = 6,420.13 : x
  2. Step 2: Convert to fraction form
    11,725.36/16,180.96 = 6,420.13/x
  3. Step 3: Cross multiply
    11,725.36x = 16,180.96 × 6,420.13
  4. Step 4: Simplify right side
    11,725.36x = 103,883,866.72
  5. Step 5: Solve for x
    x = 103,883,866.72/11,725.36
  6. Step 6: Final answer
    x = 8,859.76

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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.