Home / 19,121.82-28,690.09-9,260.34

Finding the Fourth Proportional to 19,121.82, 28,690.09 and 9,260.34

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Solution

The fourth proportional to 19,121.82, 28,690.09 and 9,260.34 is: 13,894.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.82 : 28,690.09 = 9,260.34 : x
  2. Step 2: Convert to fraction form
    19,121.82/28,690.09 = 9,260.34/x
  3. Step 3: Cross multiply
    19,121.82x = 28,690.09 × 9,260.34
  4. Step 4: Simplify right side
    19,121.82x = 265,679,941.73
  5. Step 5: Solve for x
    x = 265,679,941.73/19,121.82
  6. Step 6: Final answer
    x = 13,894.07

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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.