Home / 13,889.31-19,166.77-7,922.91

Finding the Fourth Proportional to 13,889.31, 19,166.77 and 7,922.91

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Solution

The fourth proportional to 13,889.31, 19,166.77 and 7,922.91 is: 10,933.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.31 : 19,166.77 = 7,922.91 : x
  2. Step 2: Convert to fraction form
    13,889.31/19,166.77 = 7,922.91/x
  3. Step 3: Cross multiply
    13,889.31x = 19,166.77 × 7,922.91
  4. Step 4: Simplify right side
    13,889.31x = 151,856,593.70
  5. Step 5: Solve for x
    x = 151,856,593.70/13,889.31
  6. Step 6: Final answer
    x = 10,933.34

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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.