Home / 21,933.25-32,903.30-7,138.68

Finding the Fourth Proportional to 21,933.25, 32,903.30 and 7,138.68

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Solution

The fourth proportional to 21,933.25, 32,903.30 and 7,138.68 is: 10,709.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,933.25 : 32,903.30 = 7,138.68 : x
  2. Step 2: Convert to fraction form
    21,933.25/32,903.30 = 7,138.68/x
  3. Step 3: Cross multiply
    21,933.25x = 32,903.30 × 7,138.68
  4. Step 4: Simplify right side
    21,933.25x = 234,885,929.43
  5. Step 5: Solve for x
    x = 234,885,929.43/21,933.25
  6. Step 6: Final answer
    x = 10,709.13

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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.