Home / 19,316.36-28,972.98-7,629.68

Finding the Fourth Proportional to 19,316.36, 28,972.98 and 7,629.68

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Solution

The fourth proportional to 19,316.36, 28,972.98 and 7,629.68 is: 11,443.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,316.36 : 28,972.98 = 7,629.68 : x
  2. Step 2: Convert to fraction form
    19,316.36/28,972.98 = 7,629.68/x
  3. Step 3: Cross multiply
    19,316.36x = 28,972.98 × 7,629.68
  4. Step 4: Simplify right side
    19,316.36x = 221,054,566.05
  5. Step 5: Solve for x
    x = 221,054,566.05/19,316.36
  6. Step 6: Final answer
    x = 11,443.90

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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.