Home / 20,720.44-31,073.34-6,679.90

Finding the Fourth Proportional to 20,720.44, 31,073.34 and 6,679.90

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Solution

The fourth proportional to 20,720.44, 31,073.34 and 6,679.90 is: 10,017.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,720.44 : 31,073.34 = 6,679.90 : x
  2. Step 2: Convert to fraction form
    20,720.44/31,073.34 = 6,679.90/x
  3. Step 3: Cross multiply
    20,720.44x = 31,073.34 × 6,679.90
  4. Step 4: Simplify right side
    20,720.44x = 207,566,803.87
  5. Step 5: Solve for x
    x = 207,566,803.87/20,720.44
  6. Step 6: Final answer
    x = 10,017.49

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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.