Home / 19,121.25-28,689.92-9,628.62

Finding the Fourth Proportional to 19,121.25, 28,689.92 and 9,628.62

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Solution

The fourth proportional to 19,121.25, 28,689.92 and 9,628.62 is: 14,446.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.25 : 28,689.92 = 9,628.62 : x
  2. Step 2: Convert to fraction form
    19,121.25/28,689.92 = 9,628.62/x
  3. Step 3: Cross multiply
    19,121.25x = 28,689.92 × 9,628.62
  4. Step 4: Simplify right side
    19,121.25x = 276,244,289.37
  5. Step 5: Solve for x
    x = 276,244,289.37/19,121.25
  6. Step 6: Final answer
    x = 14,446.98

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1.5x scale

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.