Home / 13,908.36-20,852.74-5,142.12

Finding the Fourth Proportional to 13,908.36, 20,852.74 and 5,142.12

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Solution

The fourth proportional to 13,908.36, 20,852.74 and 5,142.12 is: 7,709.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908.36 : 20,852.74 = 5,142.12 : x
  2. Step 2: Convert to fraction form
    13,908.36/20,852.74 = 5,142.12/x
  3. Step 3: Cross multiply
    13,908.36x = 20,852.74 × 5,142.12
  4. Step 4: Simplify right side
    13,908.36x = 107,227,291.41
  5. Step 5: Solve for x
    x = 107,227,291.41/13,908.36
  6. Step 6: Final answer
    x = 7,709.56

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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.