Home / 10,485.90-15,723.45-3,908.70

Finding the Fourth Proportional to 10,485.90, 15,723.45 and 3,908.70

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Solution

The fourth proportional to 10,485.90, 15,723.45 and 3,908.70 is: 5,861.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,485.90 : 15,723.45 = 3,908.70 : x
  2. Step 2: Convert to fraction form
    10,485.90/15,723.45 = 3,908.70/x
  3. Step 3: Cross multiply
    10,485.90x = 15,723.45 × 3,908.70
  4. Step 4: Simplify right side
    10,485.90x = 61,458,249.02
  5. Step 5: Solve for x
    x = 61,458,249.02/10,485.90
  6. Step 6: Final answer
    x = 5,861.04

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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.