Home / 12,686.97-19,030.46-5,294.91

Finding the Fourth Proportional to 12,686.97, 19,030.46 and 5,294.91

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Solution

The fourth proportional to 12,686.97, 19,030.46 and 5,294.91 is: 7,942.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,686.97 : 19,030.46 = 5,294.91 : x
  2. Step 2: Convert to fraction form
    12,686.97/19,030.46 = 5,294.91/x
  3. Step 3: Cross multiply
    12,686.97x = 19,030.46 × 5,294.91
  4. Step 4: Simplify right side
    12,686.97x = 100,764,546.48
  5. Step 5: Solve for x
    x = 100,764,546.48/12,686.97
  6. Step 6: Final answer
    x = 7,942.37

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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.