Home / 13,219.90-19,799.30-7,943.28

Finding the Fourth Proportional to 13,219.90, 19,799.30 and 7,943.28

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Solution

The fourth proportional to 13,219.90, 19,799.30 and 7,943.28 is: 11,896.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.90 : 19,799.30 = 7,943.28 : x
  2. Step 2: Convert to fraction form
    13,219.90/19,799.30 = 7,943.28/x
  3. Step 3: Cross multiply
    13,219.90x = 19,799.30 × 7,943.28
  4. Step 4: Simplify right side
    13,219.90x = 157,271,367.58
  5. Step 5: Solve for x
    x = 157,271,367.58/13,219.90
  6. Step 6: Final answer
    x = 11,896.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.