Home / 38,440.82-53,048.39-21,212.78

Finding the Fourth Proportional to 38,440.82, 53,048.39 and 21,212.78

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Solution

The fourth proportional to 38,440.82, 53,048.39 and 21,212.78 is: 29,273.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,440.82 : 53,048.39 = 21,212.78 : x
  2. Step 2: Convert to fraction form
    38,440.82/53,048.39 = 21,212.78/x
  3. Step 3: Cross multiply
    38,440.82x = 53,048.39 × 21,212.78
  4. Step 4: Simplify right side
    38,440.82x = 1,125,303,972.30
  5. Step 5: Solve for x
    x = 1,125,303,972.30/38,440.82
  6. Step 6: Final answer
    x = 29,273.67

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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.