Home / 19,929.45-29,896.35-7,455.45

Finding the Fourth Proportional to 19,929.45, 29,896.35 and 7,455.45

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Solution

The fourth proportional to 19,929.45, 29,896.35 and 7,455.45 is: 11,183.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,929.45 : 29,896.35 = 7,455.45 : x
  2. Step 2: Convert to fraction form
    19,929.45/29,896.35 = 7,455.45/x
  3. Step 3: Cross multiply
    19,929.45x = 29,896.35 × 7,455.45
  4. Step 4: Simplify right side
    19,929.45x = 222,890,742.61
  5. Step 5: Solve for x
    x = 222,890,742.61/19,929.45
  6. Step 6: Final answer
    x = 11,183.99

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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.