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Finding the Fourth Proportional to 26,617.94, 39,933.66 and 9,978.02

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Solution

The fourth proportional to 26,617.94, 39,933.66 and 9,978.02 is: 14,969.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,617.94 : 39,933.66 = 9,978.02 : x
  2. Step 2: Convert to fraction form
    26,617.94/39,933.66 = 9,978.02/x
  3. Step 3: Cross multiply
    26,617.94x = 39,933.66 × 9,978.02
  4. Step 4: Simplify right side
    26,617.94x = 398,458,858.15
  5. Step 5: Solve for x
    x = 398,458,858.15/26,617.94
  6. Step 6: Final answer
    x = 14,969.56

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1.5x scale

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.