Home / 13,959.93-19,264.37-7,991.22

Finding the Fourth Proportional to 13,959.93, 19,264.37 and 7,991.22

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Solution

The fourth proportional to 13,959.93, 19,264.37 and 7,991.22 is: 11,027.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959.93 : 19,264.37 = 7,991.22 : x
  2. Step 2: Convert to fraction form
    13,959.93/19,264.37 = 7,991.22/x
  3. Step 3: Cross multiply
    13,959.93x = 19,264.37 × 7,991.22
  4. Step 4: Simplify right side
    13,959.93x = 153,945,778.88
  5. Step 5: Solve for x
    x = 153,945,778.88/13,959.93
  6. Step 6: Final answer
    x = 11,027.69

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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.