Home / 21,962.80-30,308.30-11,891.16

Finding the Fourth Proportional to 21,962.80, 30,308.30 and 11,891.16

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Solution

The fourth proportional to 21,962.80, 30,308.30 and 11,891.16 is: 16,409.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,962.80 : 30,308.30 = 11,891.16 : x
  2. Step 2: Convert to fraction form
    21,962.80/30,308.30 = 11,891.16/x
  3. Step 3: Cross multiply
    21,962.80x = 30,308.30 × 11,891.16
  4. Step 4: Simplify right side
    21,962.80x = 360,400,844.63
  5. Step 5: Solve for x
    x = 360,400,844.63/21,962.80
  6. Step 6: Final answer
    x = 16,409.60

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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.