Home / 21,942.74-30,281.06-11,871.22

Finding the Fourth Proportional to 21,942.74, 30,281.06 and 11,871.22

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Solution

The fourth proportional to 21,942.74, 30,281.06 and 11,871.22 is: 16,382.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,942.74 : 30,281.06 = 11,871.22 : x
  2. Step 2: Convert to fraction form
    21,942.74/30,281.06 = 11,871.22/x
  3. Step 3: Cross multiply
    21,942.74x = 30,281.06 × 11,871.22
  4. Step 4: Simplify right side
    21,942.74x = 359,473,125.09
  5. Step 5: Solve for x
    x = 359,473,125.09/21,942.74
  6. Step 6: Final answer
    x = 16,382.33

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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.