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Finding the Fourth Proportional to 21,476, 29,636.88 and 12,044.36

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Solution

The fourth proportional to 21,476, 29,636.88 and 12,044.36 is: 16,621.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,476 : 29,636.88 = 12,044.36 : x
  2. Step 2: Convert to fraction form
    21,476/29,636.88 = 12,044.36/x
  3. Step 3: Cross multiply
    21,476x = 29,636.88 × 12,044.36
  4. Step 4: Simplify right side
    21,476x = 356,957,252.00
  5. Step 5: Solve for x
    x = 356,957,252.00/21,476
  6. Step 6: Final answer
    x = 16,621.22

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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.