Home / 39,569.27-54,605.41-21,420

Finding the Fourth Proportional to 39,569.27, 54,605.41 and 21,420

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Solution

The fourth proportional to 39,569.27, 54,605.41 and 21,420 is: 29,559.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,569.27 : 54,605.41 = 21,420 : x
  2. Step 2: Convert to fraction form
    39,569.27/54,605.41 = 21,420/x
  3. Step 3: Cross multiply
    39,569.27x = 54,605.41 × 21,420
  4. Step 4: Simplify right side
    39,569.27x = 1,169,647,828.65
  5. Step 5: Solve for x
    x = 1,169,647,828.65/39,569.27
  6. Step 6: Final answer
    x = 29,559.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.