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Finding the Fourth Proportional to 21,601.50, 29,810.07 and 11,665.50

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Solution

The fourth proportional to 21,601.50, 29,810.07 and 11,665.50 is: 16,098.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,601.50 : 29,810.07 = 11,665.50 : x
  2. Step 2: Convert to fraction form
    21,601.50/29,810.07 = 11,665.50/x
  3. Step 3: Cross multiply
    21,601.50x = 29,810.07 × 11,665.50
  4. Step 4: Simplify right side
    21,601.50x = 347,749,371.59
  5. Step 5: Solve for x
    x = 347,749,371.59/21,601.50
  6. Step 6: Final answer
    x = 16,098.39

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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.