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Finding the Fourth Proportional to 16,428.30, 22,671.06 and 8,976.30

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Solution

The fourth proportional to 16,428.30, 22,671.06 and 8,976.30 is: 12,387.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,428.30 : 22,671.06 = 8,976.30 : x
  2. Step 2: Convert to fraction form
    16,428.30/22,671.06 = 8,976.30/x
  3. Step 3: Cross multiply
    16,428.30x = 22,671.06 × 8,976.30
  4. Step 4: Simplify right side
    16,428.30x = 203,502,235.88
  5. Step 5: Solve for x
    x = 203,502,235.88/16,428.30
  6. Step 6: Final answer
    x = 12,387.30

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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.