Home / 20,113.94-30,173.07-8,428.34

Finding the Fourth Proportional to 20,113.94, 30,173.07 and 8,428.34

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Solution

The fourth proportional to 20,113.94, 30,173.07 and 8,428.34 is: 12,643.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,113.94 : 30,173.07 = 8,428.34 : x
  2. Step 2: Convert to fraction form
    20,113.94/30,173.07 = 8,428.34/x
  3. Step 3: Cross multiply
    20,113.94x = 30,173.07 × 8,428.34
  4. Step 4: Simplify right side
    20,113.94x = 254,308,892.80
  5. Step 5: Solve for x
    x = 254,308,892.80/20,113.94
  6. Step 6: Final answer
    x = 12,643.42

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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.