Home / 13,959.90-19,264.26-7,991.36

Finding the Fourth Proportional to 13,959.90, 19,264.26 and 7,991.36

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Solution

The fourth proportional to 13,959.90, 19,264.26 and 7,991.36 is: 11,027.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959.90 : 19,264.26 = 7,991.36 : x
  2. Step 2: Convert to fraction form
    13,959.90/19,264.26 = 7,991.36/x
  3. Step 3: Cross multiply
    13,959.90x = 19,264.26 × 7,991.36
  4. Step 4: Simplify right side
    13,959.90x = 153,947,636.79
  5. Step 5: Solve for x
    x = 153,947,636.79/13,959.90
  6. Step 6: Final answer
    x = 11,027.85

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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.