Home / 25,021.80-37,558.62-18,720

Finding the Fourth Proportional to 25,021.80, 37,558.62 and 18,720

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Solution

The fourth proportional to 25,021.80, 37,558.62 and 18,720 is: 28,099.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,021.80 : 37,558.62 = 18,720 : x
  2. Step 2: Convert to fraction form
    25,021.80/37,558.62 = 18,720/x
  3. Step 3: Cross multiply
    25,021.80x = 37,558.62 × 18,720
  4. Step 4: Simplify right side
    25,021.80x = 703,097,366.40
  5. Step 5: Solve for x
    x = 703,097,366.40/25,021.80
  6. Step 6: Final answer
    x = 28,099.39

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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.