Home / 21,966.80-30,314.20-11,895.32

Finding the Fourth Proportional to 21,966.80, 30,314.20 and 11,895.32

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Solution

The fourth proportional to 21,966.80, 30,314.20 and 11,895.32 is: 16,415.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,966.80 : 30,314.20 = 11,895.32 : x
  2. Step 2: Convert to fraction form
    21,966.80/30,314.20 = 11,895.32/x
  3. Step 3: Cross multiply
    21,966.80x = 30,314.20 × 11,895.32
  4. Step 4: Simplify right side
    21,966.80x = 360,597,109.54
  5. Step 5: Solve for x
    x = 360,597,109.54/21,966.80
  6. Step 6: Final answer
    x = 16,415.55

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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.