Home / 13,949.32-19,243.56-8,642.20

Finding the Fourth Proportional to 13,949.32, 19,243.56 and 8,642.20

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Solution

The fourth proportional to 13,949.32, 19,243.56 and 8,642.20 is: 11,922.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.32 : 19,243.56 = 8,642.20 : x
  2. Step 2: Convert to fraction form
    13,949.32/19,243.56 = 8,642.20/x
  3. Step 3: Cross multiply
    13,949.32x = 19,243.56 × 8,642.20
  4. Step 4: Simplify right side
    13,949.32x = 166,306,694.23
  5. Step 5: Solve for x
    x = 166,306,694.23/13,949.32
  6. Step 6: Final answer
    x = 11,922.21

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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.