Home / 39,723.63-54,819.07-21,819.06

Finding the Fourth Proportional to 39,723.63, 54,819.07 and 21,819.06

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Solution

The fourth proportional to 39,723.63, 54,819.07 and 21,819.06 is: 30,110.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,723.63 : 54,819.07 = 21,819.06 : x
  2. Step 2: Convert to fraction form
    39,723.63/54,819.07 = 21,819.06/x
  3. Step 3: Cross multiply
    39,723.63x = 54,819.07 × 21,819.06
  4. Step 4: Simplify right side
    39,723.63x = 1,196,100,577.47
  5. Step 5: Solve for x
    x = 1,196,100,577.47/39,723.63
  6. Step 6: Final answer
    x = 30,110.56

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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.