Home / 38,418.87-53,017.81-21,423.31

Finding the Fourth Proportional to 38,418.87, 53,017.81 and 21,423.31

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Solution

The fourth proportional to 38,418.87, 53,017.81 and 21,423.31 is: 29,564.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,418.87 : 53,017.81 = 21,423.31 : x
  2. Step 2: Convert to fraction form
    38,418.87/53,017.81 = 21,423.31/x
  3. Step 3: Cross multiply
    38,418.87x = 53,017.81 × 21,423.31
  4. Step 4: Simplify right side
    38,418.87x = 1,135,816,942.16
  5. Step 5: Solve for x
    x = 1,135,816,942.16/38,418.87
  6. Step 6: Final answer
    x = 29,564.04

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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.