Home / 13,729.08-20,477.60-13,313.73

Finding the Fourth Proportional to 13,729.08, 20,477.60 and 13,313.73

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Solution

The fourth proportional to 13,729.08, 20,477.60 and 13,313.73 is: 19,858.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729.08 : 20,477.60 = 13,313.73 : x
  2. Step 2: Convert to fraction form
    13,729.08/20,477.60 = 13,313.73/x
  3. Step 3: Cross multiply
    13,729.08x = 20,477.60 × 13,313.73
  4. Step 4: Simplify right side
    13,729.08x = 272,633,170.88
  5. Step 5: Solve for x
    x = 272,633,170.88/13,729.08
  6. Step 6: Final answer
    x = 19,858.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.