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Finding the Fourth Proportional to 21,995.84, 32,994.16 and 7,956.96

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Solution

The fourth proportional to 21,995.84, 32,994.16 and 7,956.96 is: 11,935.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.84 : 32,994.16 = 7,956.96 : x
  2. Step 2: Convert to fraction form
    21,995.84/32,994.16 = 7,956.96/x
  3. Step 3: Cross multiply
    21,995.84x = 32,994.16 × 7,956.96
  4. Step 4: Simplify right side
    21,995.84x = 262,533,211.35
  5. Step 5: Solve for x
    x = 262,533,211.35/21,995.84
  6. Step 6: Final answer
    x = 11,935.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.