Home / 39,900.54-55,060.20-21,994.56

Finding the Fourth Proportional to 39,900.54, 55,060.20 and 21,994.56

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Solution

The fourth proportional to 39,900.54, 55,060.20 and 21,994.56 is: 30,351.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,900.54 : 55,060.20 = 21,994.56 : x
  2. Step 2: Convert to fraction form
    39,900.54/55,060.20 = 21,994.56/x
  3. Step 3: Cross multiply
    39,900.54x = 55,060.20 × 21,994.56
  4. Step 4: Simplify right side
    39,900.54x = 1,211,024,872.51
  5. Step 5: Solve for x
    x = 1,211,024,872.51/39,900.54
  6. Step 6: Final answer
    x = 30,351.09

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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.