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Finding the Fourth Proportional to 16,428.56, 22,671.24 and 8,976.56

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Solution

The fourth proportional to 16,428.56, 22,671.24 and 8,976.56 is: 12,387.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,428.56 : 22,671.24 = 8,976.56 : x
  2. Step 2: Convert to fraction form
    16,428.56/22,671.24 = 8,976.56/x
  3. Step 3: Cross multiply
    16,428.56x = 22,671.24 × 8,976.56
  4. Step 4: Simplify right side
    16,428.56x = 203,509,746.13
  5. Step 5: Solve for x
    x = 203,509,746.13/16,428.56
  6. Step 6: Final answer
    x = 12,387.56

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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.