Home / 20,051.88-30,021.98-13,039.72

Finding the Fourth Proportional to 20,051.88, 30,021.98 and 13,039.72

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Solution

The fourth proportional to 20,051.88, 30,021.98 and 13,039.72 is: 19,523.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,051.88 : 30,021.98 = 13,039.72 : x
  2. Step 2: Convert to fraction form
    20,051.88/30,021.98 = 13,039.72/x
  3. Step 3: Cross multiply
    20,051.88x = 30,021.98 × 13,039.72
  4. Step 4: Simplify right side
    20,051.88x = 391,478,213.05
  5. Step 5: Solve for x
    x = 391,478,213.05/20,051.88
  6. Step 6: Final answer
    x = 19,523.27

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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.