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Finding the Fourth Proportional to 21,244.62, 29,305.62 and 12,744.48

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Solution

The fourth proportional to 21,244.62, 29,305.62 and 12,744.48 is: 17,580.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,244.62 : 29,305.62 = 12,744.48 : x
  2. Step 2: Convert to fraction form
    21,244.62/29,305.62 = 12,744.48/x
  3. Step 3: Cross multiply
    21,244.62x = 29,305.62 × 12,744.48
  4. Step 4: Simplify right side
    21,244.62x = 373,484,887.98
  5. Step 5: Solve for x
    x = 373,484,887.98/21,244.62
  6. Step 6: Final answer
    x = 17,580.21

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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.