Home / 21,663.23-29,894.82-12,231.59

Finding the Fourth Proportional to 21,663.23, 29,894.82 and 12,231.59

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Solution

The fourth proportional to 21,663.23, 29,894.82 and 12,231.59 is: 16,879.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,663.23 : 29,894.82 = 12,231.59 : x
  2. Step 2: Convert to fraction form
    21,663.23/29,894.82 = 12,231.59/x
  3. Step 3: Cross multiply
    21,663.23x = 29,894.82 × 12,231.59
  4. Step 4: Simplify right side
    21,663.23x = 365,661,181.36
  5. Step 5: Solve for x
    x = 365,661,181.36/21,663.23
  6. Step 6: Final answer
    x = 16,879.35

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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.