Home / 21,975.39-30,326.09-11,903.79

Finding the Fourth Proportional to 21,975.39, 30,326.09 and 11,903.79

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Solution

The fourth proportional to 21,975.39, 30,326.09 and 11,903.79 is: 16,427.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,975.39 : 30,326.09 = 11,903.79 : x
  2. Step 2: Convert to fraction form
    21,975.39/30,326.09 = 11,903.79/x
  3. Step 3: Cross multiply
    21,975.39x = 30,326.09 × 11,903.79
  4. Step 4: Simplify right side
    21,975.39x = 360,995,347.36
  5. Step 5: Solve for x
    x = 360,995,347.36/21,975.39
  6. Step 6: Final answer
    x = 16,427.26

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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.