Home / 13,989.51-20,991.56-6,196.50

Finding the Fourth Proportional to 13,989.51, 20,991.56 and 6,196.50

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Solution

The fourth proportional to 13,989.51, 20,991.56 and 6,196.50 is: 9,297.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.51 : 20,991.56 = 6,196.50 : x
  2. Step 2: Convert to fraction form
    13,989.51/20,991.56 = 6,196.50/x
  3. Step 3: Cross multiply
    13,989.51x = 20,991.56 × 6,196.50
  4. Step 4: Simplify right side
    13,989.51x = 130,074,170.56
  5. Step 5: Solve for x
    x = 130,074,170.56/13,989.51
  6. Step 6: Final answer
    x = 9,297.98

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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.