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Finding the Fourth Proportional to 21,930.32, 32,866.32 and 18,994.88

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Solution

The fourth proportional to 21,930.32, 32,866.32 and 18,994.88 is: 28,467.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,930.32 : 32,866.32 = 18,994.88 : x
  2. Step 2: Convert to fraction form
    21,930.32/32,866.32 = 18,994.88/x
  3. Step 3: Cross multiply
    21,930.32x = 32,866.32 × 18,994.88
  4. Step 4: Simplify right side
    21,930.32x = 624,291,804.44
  5. Step 5: Solve for x
    x = 624,291,804.44/21,930.32
  6. Step 6: Final answer
    x = 28,467.06

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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.