Home / 21,625.30-29,843.13-12,678.10

Finding the Fourth Proportional to 21,625.30, 29,843.13 and 12,678.10

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Solution

The fourth proportional to 21,625.30, 29,843.13 and 12,678.10 is: 17,495.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,625.30 : 29,843.13 = 12,678.10 : x
  2. Step 2: Convert to fraction form
    21,625.30/29,843.13 = 12,678.10/x
  3. Step 3: Cross multiply
    21,625.30x = 29,843.13 × 12,678.10
  4. Step 4: Simplify right side
    21,625.30x = 378,354,186.45
  5. Step 5: Solve for x
    x = 378,354,186.45/21,625.30
  6. Step 6: Final answer
    x = 17,495.90

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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.