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Finding the Fourth Proportional to 21,063.98, 29,068.31 and 11,504

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Solution

The fourth proportional to 21,063.98, 29,068.31 and 11,504 is: 15,875.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,063.98 : 29,068.31 = 11,504 : x
  2. Step 2: Convert to fraction form
    21,063.98/29,068.31 = 11,504/x
  3. Step 3: Cross multiply
    21,063.98x = 29,068.31 × 11,504
  4. Step 4: Simplify right side
    21,063.98x = 334,401,838.24
  5. Step 5: Solve for x
    x = 334,401,838.24/21,063.98
  6. Step 6: Final answer
    x = 15,875.53

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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.