Home / 21,886.38-30,185.37-13,914.90

Finding the Fourth Proportional to 21,886.38, 30,185.37 and 13,914.90

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Solution

The fourth proportional to 21,886.38, 30,185.37 and 13,914.90 is: 19,191.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,886.38 : 30,185.37 = 13,914.90 : x
  2. Step 2: Convert to fraction form
    21,886.38/30,185.37 = 13,914.90/x
  3. Step 3: Cross multiply
    21,886.38x = 30,185.37 × 13,914.90
  4. Step 4: Simplify right side
    21,886.38x = 420,026,405.01
  5. Step 5: Solve for x
    x = 420,026,405.01/21,886.38
  6. Step 6: Final answer
    x = 19,191.22

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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.