Home / 19,147.46-28,722.55-5,107.41

Finding the Fourth Proportional to 19,147.46, 28,722.55 and 5,107.41

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Solution

The fourth proportional to 19,147.46, 28,722.55 and 5,107.41 is: 7,661.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,147.46 : 28,722.55 = 5,107.41 : x
  2. Step 2: Convert to fraction form
    19,147.46/28,722.55 = 5,107.41/x
  3. Step 3: Cross multiply
    19,147.46x = 28,722.55 × 5,107.41
  4. Step 4: Simplify right side
    19,147.46x = 146,697,839.10
  5. Step 5: Solve for x
    x = 146,697,839.10/19,147.46
  6. Step 6: Final answer
    x = 7,661.48

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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.