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Finding the Fourth Proportional to 21,995.67, 32,993.40 and 5,355.65

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Solution

The fourth proportional to 21,995.67, 32,993.40 and 5,355.65 is: 8,033.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.67 : 32,993.40 = 5,355.65 : x
  2. Step 2: Convert to fraction form
    21,995.67/32,993.40 = 5,355.65/x
  3. Step 3: Cross multiply
    21,995.67x = 32,993.40 × 5,355.65
  4. Step 4: Simplify right side
    21,995.67x = 176,700,937.74
  5. Step 5: Solve for x
    x = 176,700,937.74/21,995.67
  6. Step 6: Final answer
    x = 8,033.44

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