Home / 11,693.96-16,137.65-6,388.78

Finding the Fourth Proportional to 11,693.96, 16,137.65 and 6,388.78

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Solution

The fourth proportional to 11,693.96, 16,137.65 and 6,388.78 is: 8,816.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,693.96 : 16,137.65 = 6,388.78 : x
  2. Step 2: Convert to fraction form
    11,693.96/16,137.65 = 6,388.78/x
  3. Step 3: Cross multiply
    11,693.96x = 16,137.65 × 6,388.78
  4. Step 4: Simplify right side
    11,693.96x = 103,099,871.19
  5. Step 5: Solve for x
    x = 103,099,871.19/11,693.96
  6. Step 6: Final answer
    x = 8,816.50

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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.