Home / 28,933.78-43,351.10-19,428.30

Finding the Fourth Proportional to 28,933.78, 43,351.10 and 19,428.30

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Solution

The fourth proportional to 28,933.78, 43,351.10 and 19,428.30 is: 29,109.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,933.78 : 43,351.10 = 19,428.30 : x
  2. Step 2: Convert to fraction form
    28,933.78/43,351.10 = 19,428.30/x
  3. Step 3: Cross multiply
    28,933.78x = 43,351.10 × 19,428.30
  4. Step 4: Simplify right side
    28,933.78x = 842,238,176.13
  5. Step 5: Solve for x
    x = 842,238,176.13/28,933.78
  6. Step 6: Final answer
    x = 29,109.17

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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.