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Finding the Fourth Proportional to 10,561.56, 15,845.04 and 3,165.72

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Solution

The fourth proportional to 10,561.56, 15,845.04 and 3,165.72 is: 4,749.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,561.56 : 15,845.04 = 3,165.72 : x
  2. Step 2: Convert to fraction form
    10,561.56/15,845.04 = 3,165.72/x
  3. Step 3: Cross multiply
    10,561.56x = 15,845.04 × 3,165.72
  4. Step 4: Simplify right side
    10,561.56x = 50,160,960.03
  5. Step 5: Solve for x
    x = 50,160,960.03/10,561.56
  6. Step 6: Final answer
    x = 4,749.39

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1.5x scale

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.