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Finding the Fourth Proportional to 16,942.80, 25,375.80 and 10,030.80

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Solution

The fourth proportional to 16,942.80, 25,375.80 and 10,030.80 is: 15,023.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,942.80 : 25,375.80 = 10,030.80 : x
  2. Step 2: Convert to fraction form
    16,942.80/25,375.80 = 10,030.80/x
  3. Step 3: Cross multiply
    16,942.80x = 25,375.80 × 10,030.80
  4. Step 4: Simplify right side
    16,942.80x = 254,539,574.64
  5. Step 5: Solve for x
    x = 254,539,574.64/16,942.80
  6. Step 6: Final answer
    x = 15,023.47

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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.