Home / 30,647.54-45,943.55-21,291.93

Finding the Fourth Proportional to 30,647.54, 45,943.55 and 21,291.93

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Solution

The fourth proportional to 30,647.54, 45,943.55 and 21,291.93 is: 31,918.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,647.54 : 45,943.55 = 21,291.93 : x
  2. Step 2: Convert to fraction form
    30,647.54/45,943.55 = 21,291.93/x
  3. Step 3: Cross multiply
    30,647.54x = 45,943.55 × 21,291.93
  4. Step 4: Simplify right side
    30,647.54x = 978,226,744.09
  5. Step 5: Solve for x
    x = 978,226,744.09/30,647.54
  6. Step 6: Final answer
    x = 31,918.61

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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.