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Finding the Fourth Proportional to 22,689.96, 31,312.14 and 12,618.12

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Solution

The fourth proportional to 22,689.96, 31,312.14 and 12,618.12 is: 17,413.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,689.96 : 31,312.14 = 12,618.12 : x
  2. Step 2: Convert to fraction form
    22,689.96/31,312.14 = 12,618.12/x
  3. Step 3: Cross multiply
    22,689.96x = 31,312.14 × 12,618.12
  4. Step 4: Simplify right side
    22,689.96x = 395,100,339.98
  5. Step 5: Solve for x
    x = 395,100,339.98/22,689.96
  6. Step 6: Final answer
    x = 17,413.00

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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.