Home / 19,271.34-28,908.90-5,231.57

Finding the Fourth Proportional to 19,271.34, 28,908.90 and 5,231.57

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Solution

The fourth proportional to 19,271.34, 28,908.90 and 5,231.57 is: 7,847.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,271.34 : 28,908.90 = 5,231.57 : x
  2. Step 2: Convert to fraction form
    19,271.34/28,908.90 = 5,231.57/x
  3. Step 3: Cross multiply
    19,271.34x = 28,908.90 × 5,231.57
  4. Step 4: Simplify right side
    19,271.34x = 151,238,789.43
  5. Step 5: Solve for x
    x = 151,238,789.43/19,271.34
  6. Step 6: Final answer
    x = 7,847.86

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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.