Home / 33,107.65-45,678.05-20,539.69

Finding the Fourth Proportional to 33,107.65, 45,678.05 and 20,539.69

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Solution

The fourth proportional to 33,107.65, 45,678.05 and 20,539.69 is: 28,338.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,107.65 : 45,678.05 = 20,539.69 : x
  2. Step 2: Convert to fraction form
    33,107.65/45,678.05 = 20,539.69/x
  3. Step 3: Cross multiply
    33,107.65x = 45,678.05 × 20,539.69
  4. Step 4: Simplify right side
    33,107.65x = 938,212,986.80
  5. Step 5: Solve for x
    x = 938,212,986.80/33,107.65
  6. Step 6: Final answer
    x = 28,338.25

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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.