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Finding the Fourth Proportional to 16,721.61, 23,076.08 and 9,168.63

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Solution

The fourth proportional to 16,721.61, 23,076.08 and 9,168.63 is: 12,652.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,721.61 : 23,076.08 = 9,168.63 : x
  2. Step 2: Convert to fraction form
    16,721.61/23,076.08 = 9,168.63/x
  3. Step 3: Cross multiply
    16,721.61x = 23,076.08 × 9,168.63
  4. Step 4: Simplify right side
    16,721.61x = 211,576,039.37
  5. Step 5: Solve for x
    x = 211,576,039.37/16,721.61
  6. Step 6: Final answer
    x = 12,652.85

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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.