Home / 10,781.64-16,166.88-4,942.08

Finding the Fourth Proportional to 10,781.64, 16,166.88 and 4,942.08

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Solution

The fourth proportional to 10,781.64, 16,166.88 and 4,942.08 is: 7,410.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.64 : 16,166.88 = 4,942.08 : x
  2. Step 2: Convert to fraction form
    10,781.64/16,166.88 = 4,942.08/x
  3. Step 3: Cross multiply
    10,781.64x = 16,166.88 × 4,942.08
  4. Step 4: Simplify right side
    10,781.64x = 79,898,014.31
  5. Step 5: Solve for x
    x = 79,898,014.31/10,781.64
  6. Step 6: Final answer
    x = 7,410.56

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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.