Home / 20,427.39-30,647.69-10,031.85

Finding the Fourth Proportional to 20,427.39, 30,647.69 and 10,031.85

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Solution

The fourth proportional to 20,427.39, 30,647.69 and 10,031.85 is: 15,051.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.39 : 30,647.69 = 10,031.85 : x
  2. Step 2: Convert to fraction form
    20,427.39/30,647.69 = 10,031.85/x
  3. Step 3: Cross multiply
    20,427.39x = 30,647.69 × 10,031.85
  4. Step 4: Simplify right side
    20,427.39x = 307,453,028.93
  5. Step 5: Solve for x
    x = 307,453,028.93/20,427.39
  6. Step 6: Final answer
    x = 15,051.02

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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.