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Finding the Fourth Proportional to 21,993.92, 32,994.40 and 7,199.36

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Solution

The fourth proportional to 21,993.92, 32,994.40 and 7,199.36 is: 10,800.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,993.92 : 32,994.40 = 7,199.36 : x
  2. Step 2: Convert to fraction form
    21,993.92/32,994.40 = 7,199.36/x
  3. Step 3: Cross multiply
    21,993.92x = 32,994.40 × 7,199.36
  4. Step 4: Simplify right side
    21,993.92x = 237,538,563.58
  5. Step 5: Solve for x
    x = 237,538,563.58/21,993.92
  6. Step 6: Final answer
    x = 10,800.19

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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.