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Finding the Fourth Proportional to 10,635.72, 15,941.31 and 9,405.54

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Solution

The fourth proportional to 10,635.72, 15,941.31 and 9,405.54 is: 14,097.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,635.72 : 15,941.31 = 9,405.54 : x
  2. Step 2: Convert to fraction form
    10,635.72/15,941.31 = 9,405.54/x
  3. Step 3: Cross multiply
    10,635.72x = 15,941.31 × 9,405.54
  4. Step 4: Simplify right side
    10,635.72x = 149,936,628.86
  5. Step 5: Solve for x
    x = 149,936,628.86/10,635.72
  6. Step 6: Final answer
    x = 14,097.46

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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.