Home / 30,291.09-41,803.73-18,355.60

Finding the Fourth Proportional to 30,291.09, 41,803.73 and 18,355.60

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Solution

The fourth proportional to 30,291.09, 41,803.73 and 18,355.60 is: 25,331.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,291.09 : 41,803.73 = 18,355.60 : x
  2. Step 2: Convert to fraction form
    30,291.09/41,803.73 = 18,355.60/x
  3. Step 3: Cross multiply
    30,291.09x = 41,803.73 × 18,355.60
  4. Step 4: Simplify right side
    30,291.09x = 767,332,546.39
  5. Step 5: Solve for x
    x = 767,332,546.39/30,291.09
  6. Step 6: Final answer
    x = 25,331.96

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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.