Home / 21,959.39-30,304.06-11,887.84

Finding the Fourth Proportional to 21,959.39, 30,304.06 and 11,887.84

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Solution

The fourth proportional to 21,959.39, 30,304.06 and 11,887.84 is: 16,405.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.39 : 30,304.06 = 11,887.84 : x
  2. Step 2: Convert to fraction form
    21,959.39/30,304.06 = 11,887.84/x
  3. Step 3: Cross multiply
    21,959.39x = 30,304.06 × 11,887.84
  4. Step 4: Simplify right side
    21,959.39x = 360,249,711.15
  5. Step 5: Solve for x
    x = 360,249,711.15/21,959.39
  6. Step 6: Final answer
    x = 16,405.27

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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.