Home / 20,122.36-30,173.40-6,971.20

Finding the Fourth Proportional to 20,122.36, 30,173.40 and 6,971.20

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Solution

The fourth proportional to 20,122.36, 30,173.40 and 6,971.20 is: 10,453.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.36 : 30,173.40 = 6,971.20 : x
  2. Step 2: Convert to fraction form
    20,122.36/30,173.40 = 6,971.20/x
  3. Step 3: Cross multiply
    20,122.36x = 30,173.40 × 6,971.20
  4. Step 4: Simplify right side
    20,122.36x = 210,344,806.08
  5. Step 5: Solve for x
    x = 210,344,806.08/20,122.36
  6. Step 6: Final answer
    x = 10,453.29

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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.