Home / 10,961.65-16,436.40-4,720.60

Finding the Fourth Proportional to 10,961.65, 16,436.40 and 4,720.60

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Solution

The fourth proportional to 10,961.65, 16,436.40 and 4,720.60 is: 7,078.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961.65 : 16,436.40 = 4,720.60 : x
  2. Step 2: Convert to fraction form
    10,961.65/16,436.40 = 4,720.60/x
  3. Step 3: Cross multiply
    10,961.65x = 16,436.40 × 4,720.60
  4. Step 4: Simplify right side
    10,961.65x = 77,589,669.84
  5. Step 5: Solve for x
    x = 77,589,669.84/10,961.65
  6. Step 6: Final answer
    x = 7,078.28

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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.