Home / 10,905.96-16,363.26-3,985.32

Finding the Fourth Proportional to 10,905.96, 16,363.26 and 3,985.32

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Solution

The fourth proportional to 10,905.96, 16,363.26 and 3,985.32 is: 5,979.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,905.96 : 16,363.26 = 3,985.32 : x
  2. Step 2: Convert to fraction form
    10,905.96/16,363.26 = 3,985.32/x
  3. Step 3: Cross multiply
    10,905.96x = 16,363.26 × 3,985.32
  4. Step 4: Simplify right side
    10,905.96x = 65,212,827.34
  5. Step 5: Solve for x
    x = 65,212,827.34/10,905.96
  6. Step 6: Final answer
    x = 5,979.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.