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Finding the Fourth Proportional to 22,279.46, 30,747.12 and 12,848.64

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Solution

The fourth proportional to 22,279.46, 30,747.12 and 12,848.64 is: 17,731.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,279.46 : 30,747.12 = 12,848.64 : x
  2. Step 2: Convert to fraction form
    22,279.46/30,747.12 = 12,848.64/x
  3. Step 3: Cross multiply
    22,279.46x = 30,747.12 × 12,848.64
  4. Step 4: Simplify right side
    22,279.46x = 395,058,675.92
  5. Step 5: Solve for x
    x = 395,058,675.92/22,279.46
  6. Step 6: Final answer
    x = 17,731.97

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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.