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Finding the Fourth Proportional to 16,316.95, 22,515.41 and 9,145.22

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Solution

The fourth proportional to 16,316.95, 22,515.41 and 9,145.22 is: 12,619.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,316.95 : 22,515.41 = 9,145.22 : x
  2. Step 2: Convert to fraction form
    16,316.95/22,515.41 = 9,145.22/x
  3. Step 3: Cross multiply
    16,316.95x = 22,515.41 × 9,145.22
  4. Step 4: Simplify right side
    16,316.95x = 205,908,219.54
  5. Step 5: Solve for x
    x = 205,908,219.54/16,316.95
  6. Step 6: Final answer
    x = 12,619.28

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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.