Home / 30,321.34-41,860.81-20,266.81

Finding the Fourth Proportional to 30,321.34, 41,860.81 and 20,266.81

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Solution

The fourth proportional to 30,321.34, 41,860.81 and 20,266.81 is: 27,979.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,321.34 : 41,860.81 = 20,266.81 : x
  2. Step 2: Convert to fraction form
    30,321.34/41,860.81 = 20,266.81/x
  3. Step 3: Cross multiply
    30,321.34x = 41,860.81 × 20,266.81
  4. Step 4: Simplify right side
    30,321.34x = 848,384,873.41
  5. Step 5: Solve for x
    x = 848,384,873.41/30,321.34
  6. Step 6: Final answer
    x = 27,979.80

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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.