Home / 13,858.44-19,124.22-7,890.96

Finding the Fourth Proportional to 13,858.44, 19,124.22 and 7,890.96

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Solution

The fourth proportional to 13,858.44, 19,124.22 and 7,890.96 is: 10,889.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,858.44 : 19,124.22 = 7,890.96 : x
  2. Step 2: Convert to fraction form
    13,858.44/19,124.22 = 7,890.96/x
  3. Step 3: Cross multiply
    13,858.44x = 19,124.22 × 7,890.96
  4. Step 4: Simplify right side
    13,858.44x = 150,908,455.05
  5. Step 5: Solve for x
    x = 150,908,455.05/13,858.44
  6. Step 6: Final answer
    x = 10,889.28

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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.