Home / 20,328.35-30,492.74-7,171.49

Finding the Fourth Proportional to 20,328.35, 30,492.74 and 7,171.49

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Solution

The fourth proportional to 20,328.35, 30,492.74 and 7,171.49 is: 10,757.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.35 : 30,492.74 = 7,171.49 : x
  2. Step 2: Convert to fraction form
    20,328.35/30,492.74 = 7,171.49/x
  3. Step 3: Cross multiply
    20,328.35x = 30,492.74 × 7,171.49
  4. Step 4: Simplify right side
    20,328.35x = 218,678,245.45
  5. Step 5: Solve for x
    x = 218,678,245.45/20,328.35
  6. Step 6: Final answer
    x = 10,757.31

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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.