Home / 21,376.77-29,500.43-11,945.31

Finding the Fourth Proportional to 21,376.77, 29,500.43 and 11,945.31

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Solution

The fourth proportional to 21,376.77, 29,500.43 and 11,945.31 is: 16,484.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,376.77 : 29,500.43 = 11,945.31 : x
  2. Step 2: Convert to fraction form
    21,376.77/29,500.43 = 11,945.31/x
  3. Step 3: Cross multiply
    21,376.77x = 29,500.43 × 11,945.31
  4. Step 4: Simplify right side
    21,376.77x = 352,391,781.48
  5. Step 5: Solve for x
    x = 352,391,781.48/21,376.77
  6. Step 6: Final answer
    x = 16,484.80

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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.