Home / 39,723.70-54,819.15-21,819.12

Finding the Fourth Proportional to 39,723.70, 54,819.15 and 21,819.12

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Solution

The fourth proportional to 39,723.70, 54,819.15 and 21,819.12 is: 30,110.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,723.70 : 54,819.15 = 21,819.12 : x
  2. Step 2: Convert to fraction form
    39,723.70/54,819.15 = 21,819.12/x
  3. Step 3: Cross multiply
    39,723.70x = 54,819.15 × 21,819.12
  4. Step 4: Simplify right side
    39,723.70x = 1,196,105,612.15
  5. Step 5: Solve for x
    x = 1,196,105,612.15/39,723.70
  6. Step 6: Final answer
    x = 30,110.63

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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.