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Finding the Fourth Proportional to 21,379.04, 29,495.04 and 11,944.16

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Solution

The fourth proportional to 21,379.04, 29,495.04 and 11,944.16 is: 16,478.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.04 : 29,495.04 = 11,944.16 : x
  2. Step 2: Convert to fraction form
    21,379.04/29,495.04 = 11,944.16/x
  3. Step 3: Cross multiply
    21,379.04x = 29,495.04 × 11,944.16
  4. Step 4: Simplify right side
    21,379.04x = 352,293,476.97
  5. Step 5: Solve for x
    x = 352,293,476.97/21,379.04
  6. Step 6: Final answer
    x = 16,478.45

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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.