Home / 13,669.76-18,917.44-13,439.36

Finding the Fourth Proportional to 13,669.76, 18,917.44 and 13,439.36

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Solution

The fourth proportional to 13,669.76, 18,917.44 and 13,439.36 is: 18,598.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,669.76 : 18,917.44 = 13,439.36 : x
  2. Step 2: Convert to fraction form
    13,669.76/18,917.44 = 13,439.36/x
  3. Step 3: Cross multiply
    13,669.76x = 18,917.44 × 13,439.36
  4. Step 4: Simplify right side
    13,669.76x = 254,238,286.44
  5. Step 5: Solve for x
    x = 254,238,286.44/13,669.76
  6. Step 6: Final answer
    x = 18,598.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.