Home / 21,972.97-30,322.73-11,901.43

Finding the Fourth Proportional to 21,972.97, 30,322.73 and 11,901.43

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Solution

The fourth proportional to 21,972.97, 30,322.73 and 11,901.43 is: 16,423.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.97 : 30,322.73 = 11,901.43 : x
  2. Step 2: Convert to fraction form
    21,972.97/30,322.73 = 11,901.43/x
  3. Step 3: Cross multiply
    21,972.97x = 30,322.73 × 11,901.43
  4. Step 4: Simplify right side
    21,972.97x = 360,883,848.50
  5. Step 5: Solve for x
    x = 360,883,848.50/21,972.97
  6. Step 6: Final answer
    x = 16,423.99

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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.