Home / 40,390.72-55,739.74-22,243.60

Finding the Fourth Proportional to 40,390.72, 55,739.74 and 22,243.60

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Solution

The fourth proportional to 40,390.72, 55,739.74 and 22,243.60 is: 30,696.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,390.72 : 55,739.74 = 22,243.60 : x
  2. Step 2: Convert to fraction form
    40,390.72/55,739.74 = 22,243.60/x
  3. Step 3: Cross multiply
    40,390.72x = 55,739.74 × 22,243.60
  4. Step 4: Simplify right side
    40,390.72x = 1,239,852,480.66
  5. Step 5: Solve for x
    x = 1,239,852,480.66/40,390.72
  6. Step 6: Final answer
    x = 30,696.47

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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.