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Finding the Fourth Proportional to 21,605.14, 29,814.91 and 12,044.91

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Solution

The fourth proportional to 21,605.14, 29,814.91 and 12,044.91 is: 16,621.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,605.14 : 29,814.91 = 12,044.91 : x
  2. Step 2: Convert to fraction form
    21,605.14/29,814.91 = 12,044.91/x
  3. Step 3: Cross multiply
    21,605.14x = 29,814.91 × 12,044.91
  4. Step 4: Simplify right side
    21,605.14x = 359,117,907.61
  5. Step 5: Solve for x
    x = 359,117,907.61/21,605.14
  6. Step 6: Final answer
    x = 16,621.87

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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.