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Finding the Fourth Proportional to 23,688.40, 35,561.40 and 11,995.60

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Solution

The fourth proportional to 23,688.40, 35,561.40 and 11,995.60 is: 18,007.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,688.40 : 35,561.40 = 11,995.60 : x
  2. Step 2: Convert to fraction form
    23,688.40/35,561.40 = 11,995.60/x
  3. Step 3: Cross multiply
    23,688.40x = 35,561.40 × 11,995.60
  4. Step 4: Simplify right side
    23,688.40x = 426,580,329.84
  5. Step 5: Solve for x
    x = 426,580,329.84/23,688.40
  6. Step 6: Final answer
    x = 18,007.98

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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.