Home / 19,964.04-29,945.52-5,172.90

Finding the Fourth Proportional to 19,964.04, 29,945.52 and 5,172.90

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Solution

The fourth proportional to 19,964.04, 29,945.52 and 5,172.90 is: 7,759.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,964.04 : 29,945.52 = 5,172.90 : x
  2. Step 2: Convert to fraction form
    19,964.04/29,945.52 = 5,172.90/x
  3. Step 3: Cross multiply
    19,964.04x = 29,945.52 × 5,172.90
  4. Step 4: Simplify right side
    19,964.04x = 154,905,180.41
  5. Step 5: Solve for x
    x = 154,905,180.41/19,964.04
  6. Step 6: Final answer
    x = 7,759.21

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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.