Home / 20,331.03-30,489.05-7,000.23

Finding the Fourth Proportional to 20,331.03, 30,489.05 and 7,000.23

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Solution

The fourth proportional to 20,331.03, 30,489.05 and 7,000.23 is: 10,497.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.03 : 30,489.05 = 7,000.23 : x
  2. Step 2: Convert to fraction form
    20,331.03/30,489.05 = 7,000.23/x
  3. Step 3: Cross multiply
    20,331.03x = 30,489.05 × 7,000.23
  4. Step 4: Simplify right side
    20,331.03x = 213,430,362.48
  5. Step 5: Solve for x
    x = 213,430,362.48/20,331.03
  6. Step 6: Final answer
    x = 10,497.76

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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.