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Finding the Fourth Proportional to 21,668.94, 29,901.69 and 12,593.49

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Solution

The fourth proportional to 21,668.94, 29,901.69 and 12,593.49 is: 17,378.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,668.94 : 29,901.69 = 12,593.49 : x
  2. Step 2: Convert to fraction form
    21,668.94/29,901.69 = 12,593.49/x
  3. Step 3: Cross multiply
    21,668.94x = 29,901.69 × 12,593.49
  4. Step 4: Simplify right side
    21,668.94x = 376,566,634.00
  5. Step 5: Solve for x
    x = 376,566,634.00/21,668.94
  6. Step 6: Final answer
    x = 17,378.18

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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.