Home / 20,021.01-30,042.21-12,999.38

Finding the Fourth Proportional to 20,021.01, 30,042.21 and 12,999.38

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Solution

The fourth proportional to 20,021.01, 30,042.21 and 12,999.38 is: 19,506.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.01 : 30,042.21 = 12,999.38 : x
  2. Step 2: Convert to fraction form
    20,021.01/30,042.21 = 12,999.38/x
  3. Step 3: Cross multiply
    20,021.01x = 30,042.21 × 12,999.38
  4. Step 4: Simplify right side
    20,021.01x = 390,529,953.62
  5. Step 5: Solve for x
    x = 390,529,953.62/20,021.01
  6. Step 6: Final answer
    x = 19,506.01

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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.