Home / 12,661.11-18,973.83-9,688.05

Finding the Fourth Proportional to 12,661.11, 18,973.83 and 9,688.05

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Solution

The fourth proportional to 12,661.11, 18,973.83 and 9,688.05 is: 14,518.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.11 : 18,973.83 = 9,688.05 : x
  2. Step 2: Convert to fraction form
    12,661.11/18,973.83 = 9,688.05/x
  3. Step 3: Cross multiply
    12,661.11x = 18,973.83 × 9,688.05
  4. Step 4: Simplify right side
    12,661.11x = 183,819,413.73
  5. Step 5: Solve for x
    x = 183,819,413.73/12,661.11
  6. Step 6: Final answer
    x = 14,518.43

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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.