Home / 26,712.95-40,069.60-7,991.21

Finding the Fourth Proportional to 26,712.95, 40,069.60 and 7,991.21

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Solution

The fourth proportional to 26,712.95, 40,069.60 and 7,991.21 is: 11,986.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,712.95 : 40,069.60 = 7,991.21 : x
  2. Step 2: Convert to fraction form
    26,712.95/40,069.60 = 7,991.21/x
  3. Step 3: Cross multiply
    26,712.95x = 40,069.60 × 7,991.21
  4. Step 4: Simplify right side
    26,712.95x = 320,204,454.26
  5. Step 5: Solve for x
    x = 320,204,454.26/26,712.95
  6. Step 6: Final answer
    x = 11,986.86

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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.