Home / 21,418.07-29,552.82-13,863.35

Finding the Fourth Proportional to 21,418.07, 29,552.82 and 13,863.35

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Solution

The fourth proportional to 21,418.07, 29,552.82 and 13,863.35 is: 19,128.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,418.07 : 29,552.82 = 13,863.35 : x
  2. Step 2: Convert to fraction form
    21,418.07/29,552.82 = 13,863.35/x
  3. Step 3: Cross multiply
    21,418.07x = 29,552.82 × 13,863.35
  4. Step 4: Simplify right side
    21,418.07x = 409,701,226.01
  5. Step 5: Solve for x
    x = 409,701,226.01/21,418.07
  6. Step 6: Final answer
    x = 19,128.76

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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.