Home / 21,972.71-30,322.42-11,901.13

Finding the Fourth Proportional to 21,972.71, 30,322.42 and 11,901.13

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Solution

The fourth proportional to 21,972.71, 30,322.42 and 11,901.13 is: 16,423.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.71 : 30,322.42 = 11,901.13 : x
  2. Step 2: Convert to fraction form
    21,972.71/30,322.42 = 11,901.13/x
  3. Step 3: Cross multiply
    21,972.71x = 30,322.42 × 11,901.13
  4. Step 4: Simplify right side
    21,972.71x = 360,870,956.78
  5. Step 5: Solve for x
    x = 360,870,956.78/21,972.71
  6. Step 6: Final answer
    x = 16,423.60

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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.