Home / 20,020.88-30,021.10-6,689.07

Finding the Fourth Proportional to 20,020.88, 30,021.10 and 6,689.07

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Solution

The fourth proportional to 20,020.88, 30,021.10 and 6,689.07 is: 10,030.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,020.88 : 30,021.10 = 6,689.07 : x
  2. Step 2: Convert to fraction form
    20,020.88/30,021.10 = 6,689.07/x
  3. Step 3: Cross multiply
    20,020.88x = 30,021.10 × 6,689.07
  4. Step 4: Simplify right side
    20,020.88x = 200,813,239.38
  5. Step 5: Solve for x
    x = 200,813,239.38/20,020.88
  6. Step 6: Final answer
    x = 10,030.19

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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.