Home / 21,868.24-30,181.44-13,913.92

Finding the Fourth Proportional to 21,868.24, 30,181.44 and 13,913.92

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Solution

The fourth proportional to 21,868.24, 30,181.44 and 13,913.92 is: 19,203.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,868.24 : 30,181.44 = 13,913.92 : x
  2. Step 2: Convert to fraction form
    21,868.24/30,181.44 = 13,913.92/x
  3. Step 3: Cross multiply
    21,868.24x = 30,181.44 × 13,913.92
  4. Step 4: Simplify right side
    21,868.24x = 419,942,141.64
  5. Step 5: Solve for x
    x = 419,942,141.64/21,868.24
  6. Step 6: Final answer
    x = 19,203.29

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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.