Home / 21,863.30-30,175.84-13,903.99

Finding the Fourth Proportional to 21,863.30, 30,175.84 and 13,903.99

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Solution

The fourth proportional to 21,863.30, 30,175.84 and 13,903.99 is: 19,190.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,863.30 : 30,175.84 = 13,903.99 : x
  2. Step 2: Convert to fraction form
    21,863.30/30,175.84 = 13,903.99/x
  3. Step 3: Cross multiply
    21,863.30x = 30,175.84 × 13,903.99
  4. Step 4: Simplify right side
    21,863.30x = 419,564,577.60
  5. Step 5: Solve for x
    x = 419,564,577.60/21,863.30
  6. Step 6: Final answer
    x = 19,190.36

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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.