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Finding the Fourth Proportional to 22,951.63, 31,671.96 and 12,879.16

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Solution

The fourth proportional to 22,951.63, 31,671.96 and 12,879.16 is: 17,772.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,951.63 : 31,671.96 = 12,879.16 : x
  2. Step 2: Convert to fraction form
    22,951.63/31,671.96 = 12,879.16/x
  3. Step 3: Cross multiply
    22,951.63x = 31,671.96 × 12,879.16
  4. Step 4: Simplify right side
    22,951.63x = 407,908,240.35
  5. Step 5: Solve for x
    x = 407,908,240.35/22,951.63
  6. Step 6: Final answer
    x = 17,772.52

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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.