Home / 20,431.83-30,647.76-5,645.01

Finding the Fourth Proportional to 20,431.83, 30,647.76 and 5,645.01

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Solution

The fourth proportional to 20,431.83, 30,647.76 and 5,645.01 is: 8,467.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.83 : 30,647.76 = 5,645.01 : x
  2. Step 2: Convert to fraction form
    20,431.83/30,647.76 = 5,645.01/x
  3. Step 3: Cross multiply
    20,431.83x = 30,647.76 × 5,645.01
  4. Step 4: Simplify right side
    20,431.83x = 173,006,911.68
  5. Step 5: Solve for x
    x = 173,006,911.68/20,431.83
  6. Step 6: Final answer
    x = 8,467.52

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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.