Home / 21,883.38-30,181.23-13,911.90

Finding the Fourth Proportional to 21,883.38, 30,181.23 and 13,911.90

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Solution

The fourth proportional to 21,883.38, 30,181.23 and 13,911.90 is: 19,187.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,883.38 : 30,181.23 = 13,911.90 : x
  2. Step 2: Convert to fraction form
    21,883.38/30,181.23 = 13,911.90/x
  3. Step 3: Cross multiply
    21,883.38x = 30,181.23 × 13,911.90
  4. Step 4: Simplify right side
    21,883.38x = 419,878,253.64
  5. Step 5: Solve for x
    x = 419,878,253.64/21,883.38
  6. Step 6: Final answer
    x = 19,187.08

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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.