Home / 20,218.35-30,329.10-5,427.12

Finding the Fourth Proportional to 20,218.35, 30,329.10 and 5,427.12

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Solution

The fourth proportional to 20,218.35, 30,329.10 and 5,427.12 is: 8,141.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218.35 : 30,329.10 = 5,427.12 : x
  2. Step 2: Convert to fraction form
    20,218.35/30,329.10 = 5,427.12/x
  3. Step 3: Cross multiply
    20,218.35x = 30,329.10 × 5,427.12
  4. Step 4: Simplify right side
    20,218.35x = 164,599,665.19
  5. Step 5: Solve for x
    x = 164,599,665.19/20,218.35
  6. Step 6: Final answer
    x = 8,141.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.