Home / 39,699.72-54,783.68-21,794.27

Finding the Fourth Proportional to 39,699.72, 54,783.68 and 21,794.27

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Solution

The fourth proportional to 39,699.72, 54,783.68 and 21,794.27 is: 30,075.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,699.72 : 54,783.68 = 21,794.27 : x
  2. Step 2: Convert to fraction form
    39,699.72/54,783.68 = 21,794.27/x
  3. Step 3: Cross multiply
    39,699.72x = 54,783.68 × 21,794.27
  4. Step 4: Simplify right side
    39,699.72x = 1,193,969,930.62
  5. Step 5: Solve for x
    x = 1,193,969,930.62/39,699.72
  6. Step 6: Final answer
    x = 30,075.02

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1.5x scale

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.