Home / 20,021.18-30,022.65-10,658.79

Finding the Fourth Proportional to 20,021.18, 30,022.65 and 10,658.79

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Solution

The fourth proportional to 20,021.18, 30,022.65 and 10,658.79 is: 15,983.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.18 : 30,022.65 = 10,658.79 : x
  2. Step 2: Convert to fraction form
    20,021.18/30,022.65 = 10,658.79/x
  3. Step 3: Cross multiply
    20,021.18x = 30,022.65 × 10,658.79
  4. Step 4: Simplify right side
    20,021.18x = 320,005,121.59
  5. Step 5: Solve for x
    x = 320,005,121.59/20,021.18
  6. Step 6: Final answer
    x = 15,983.33

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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.