Home / 13,791.21-20,670.40-5,015.94

Finding the Fourth Proportional to 13,791.21, 20,670.40 and 5,015.94

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Solution

The fourth proportional to 13,791.21, 20,670.40 and 5,015.94 is: 7,517.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,791.21 : 20,670.40 = 5,015.94 : x
  2. Step 2: Convert to fraction form
    13,791.21/20,670.40 = 5,015.94/x
  3. Step 3: Cross multiply
    13,791.21x = 20,670.40 × 5,015.94
  4. Step 4: Simplify right side
    13,791.21x = 103,681,486.18
  5. Step 5: Solve for x
    x = 103,681,486.18/13,791.21
  6. Step 6: Final answer
    x = 7,517.94

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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.