Home / 39,724.40-54,819.50-21,819.35

Finding the Fourth Proportional to 39,724.40, 54,819.50 and 21,819.35

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Solution

The fourth proportional to 39,724.40, 54,819.50 and 21,819.35 is: 30,110.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,724.40 : 54,819.50 = 21,819.35 : x
  2. Step 2: Convert to fraction form
    39,724.40/54,819.50 = 21,819.35/x
  3. Step 3: Cross multiply
    39,724.40x = 54,819.50 × 21,819.35
  4. Step 4: Simplify right side
    39,724.40x = 1,196,125,857.33
  5. Step 5: Solve for x
    x = 1,196,125,857.33/39,724.40
  6. Step 6: Final answer
    x = 30,110.61

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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.