Home / 20,021.22-30,021.63-6,689.43

Finding the Fourth Proportional to 20,021.22, 30,021.63 and 6,689.43

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Solution

The fourth proportional to 20,021.22, 30,021.63 and 6,689.43 is: 10,030.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.22 : 30,021.63 = 6,689.43 : x
  2. Step 2: Convert to fraction form
    20,021.22/30,021.63 = 6,689.43/x
  3. Step 3: Cross multiply
    20,021.22x = 30,021.63 × 6,689.43
  4. Step 4: Simplify right side
    20,021.22x = 200,827,592.37
  5. Step 5: Solve for x
    x = 200,827,592.37/20,021.22
  6. Step 6: Final answer
    x = 10,030.74

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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.