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Finding the Fourth Proportional to 16,291.80, 22,483.80 and 9,122.40

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Solution

The fourth proportional to 16,291.80, 22,483.80 and 9,122.40 is: 12,589.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,291.80 : 22,483.80 = 9,122.40 : x
  2. Step 2: Convert to fraction form
    16,291.80/22,483.80 = 9,122.40/x
  3. Step 3: Cross multiply
    16,291.80x = 22,483.80 × 9,122.40
  4. Step 4: Simplify right side
    16,291.80x = 205,106,217.12
  5. Step 5: Solve for x
    x = 205,106,217.12/16,291.80
  6. Step 6: Final answer
    x = 12,589.54

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.