Home / 39,790.05-54,911.16-21,886.62

Finding the Fourth Proportional to 39,790.05, 54,911.16 and 21,886.62

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Solution

The fourth proportional to 39,790.05, 54,911.16 and 21,886.62 is: 30,204.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,790.05 : 54,911.16 = 21,886.62 : x
  2. Step 2: Convert to fraction form
    39,790.05/54,911.16 = 21,886.62/x
  3. Step 3: Cross multiply
    39,790.05x = 54,911.16 × 21,886.62
  4. Step 4: Simplify right side
    39,790.05x = 1,201,819,692.68
  5. Step 5: Solve for x
    x = 1,201,819,692.68/39,790.05
  6. Step 6: Final answer
    x = 30,204.03

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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.