Home / 20,139.03-30,224.12-13,942.35

Finding the Fourth Proportional to 20,139.03, 30,224.12 and 13,942.35

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Solution

The fourth proportional to 20,139.03, 30,224.12 and 13,942.35 is: 20,924.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.03 : 30,224.12 = 13,942.35 : x
  2. Step 2: Convert to fraction form
    20,139.03/30,224.12 = 13,942.35/x
  3. Step 3: Cross multiply
    20,139.03x = 30,224.12 × 13,942.35
  4. Step 4: Simplify right side
    20,139.03x = 421,395,189.77
  5. Step 5: Solve for x
    x = 421,395,189.77/20,139.03
  6. Step 6: Final answer
    x = 20,924.30

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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.