Home / 21,960.54-30,305.56-11,889.07

Finding the Fourth Proportional to 21,960.54, 30,305.56 and 11,889.07

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Solution

The fourth proportional to 21,960.54, 30,305.56 and 11,889.07 is: 16,406.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960.54 : 30,305.56 = 11,889.07 : x
  2. Step 2: Convert to fraction form
    21,960.54/30,305.56 = 11,889.07/x
  3. Step 3: Cross multiply
    21,960.54x = 30,305.56 × 11,889.07
  4. Step 4: Simplify right side
    21,960.54x = 360,304,924.23
  5. Step 5: Solve for x
    x = 360,304,924.23/21,960.54
  6. Step 6: Final answer
    x = 16,406.92

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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.