Home / 21,923.87-30,257.45-12,974.48

Finding the Fourth Proportional to 21,923.87, 30,257.45 and 12,974.48

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Solution

The fourth proportional to 21,923.87, 30,257.45 and 12,974.48 is: 17,906.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,923.87 : 30,257.45 = 12,974.48 : x
  2. Step 2: Convert to fraction form
    21,923.87/30,257.45 = 12,974.48/x
  3. Step 3: Cross multiply
    21,923.87x = 30,257.45 × 12,974.48
  4. Step 4: Simplify right side
    21,923.87x = 392,574,625.84
  5. Step 5: Solve for x
    x = 392,574,625.84/21,923.87
  6. Step 6: Final answer
    x = 17,906.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.