Home / 13,939.36-19,235.52-7,889.44

Finding the Fourth Proportional to 13,939.36, 19,235.52 and 7,889.44

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Solution

The fourth proportional to 13,939.36, 19,235.52 and 7,889.44 is: 10,886.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.36 : 19,235.52 = 7,889.44 : x
  2. Step 2: Convert to fraction form
    13,939.36/19,235.52 = 7,889.44/x
  3. Step 3: Cross multiply
    13,939.36x = 19,235.52 × 7,889.44
  4. Step 4: Simplify right side
    13,939.36x = 151,757,480.91
  5. Step 5: Solve for x
    x = 151,757,480.91/13,939.36
  6. Step 6: Final answer
    x = 10,886.98

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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.