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Finding the Fourth Proportional to 10,953.90, 16,434.90 and 3,558.60

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Solution

The fourth proportional to 10,953.90, 16,434.90 and 3,558.60 is: 5,339.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,953.90 : 16,434.90 = 3,558.60 : x
  2. Step 2: Convert to fraction form
    10,953.90/16,434.90 = 3,558.60/x
  3. Step 3: Cross multiply
    10,953.90x = 16,434.90 × 3,558.60
  4. Step 4: Simplify right side
    10,953.90x = 58,485,235.14
  5. Step 5: Solve for x
    x = 58,485,235.14/10,953.90
  6. Step 6: Final answer
    x = 5,339.22

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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.