Home / 21,972.81-30,322.62-12,282.27

Finding the Fourth Proportional to 21,972.81, 30,322.62 and 12,282.27

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Solution

The fourth proportional to 21,972.81, 30,322.62 and 12,282.27 is: 16,949.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.81 : 30,322.62 = 12,282.27 : x
  2. Step 2: Convert to fraction form
    21,972.81/30,322.62 = 12,282.27/x
  3. Step 3: Cross multiply
    21,972.81x = 30,322.62 × 12,282.27
  4. Step 4: Simplify right side
    21,972.81x = 372,430,605.95
  5. Step 5: Solve for x
    x = 372,430,605.95/21,972.81
  6. Step 6: Final answer
    x = 16,949.61

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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.