Home / 39,739.66-54,840.76-21,835.82

Finding the Fourth Proportional to 39,739.66, 54,840.76 and 21,835.82

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Solution

The fourth proportional to 39,739.66, 54,840.76 and 21,835.82 is: 30,133.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,739.66 : 54,840.76 = 21,835.82 : x
  2. Step 2: Convert to fraction form
    39,739.66/54,840.76 = 21,835.82/x
  3. Step 3: Cross multiply
    39,739.66x = 54,840.76 × 21,835.82
  4. Step 4: Simplify right side
    39,739.66x = 1,197,493,046.54
  5. Step 5: Solve for x
    x = 1,197,493,046.54/39,739.66
  6. Step 6: Final answer
    x = 30,133.45

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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.