Home / 43,828.20-65,699.10-21,623.40

Finding the Fourth Proportional to 43,828.20, 65,699.10 and 21,623.40

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Solution

The fourth proportional to 43,828.20, 65,699.10 and 21,623.40 is: 32,413.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,828.20 : 65,699.10 = 21,623.40 : x
  2. Step 2: Convert to fraction form
    43,828.20/65,699.10 = 21,623.40/x
  3. Step 3: Cross multiply
    43,828.20x = 65,699.10 × 21,623.40
  4. Step 4: Simplify right side
    43,828.20x = 1,420,637,918.94
  5. Step 5: Solve for x
    x = 1,420,637,918.94/43,828.20
  6. Step 6: Final answer
    x = 32,413.79

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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.