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Finding the Fourth Proportional to 21,061.26, 29,063.88 and 11,629.08

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Solution

The fourth proportional to 21,061.26, 29,063.88 and 11,629.08 is: 16,047.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,061.26 : 29,063.88 = 11,629.08 : x
  2. Step 2: Convert to fraction form
    21,061.26/29,063.88 = 11,629.08/x
  3. Step 3: Cross multiply
    21,061.26x = 29,063.88 × 11,629.08
  4. Step 4: Simplify right side
    21,061.26x = 337,986,185.63
  5. Step 5: Solve for x
    x = 337,986,185.63/21,061.26
  6. Step 6: Final answer
    x = 16,047.77

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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.