Home / 42,855.97-64,325.42-20,684.96

Finding the Fourth Proportional to 42,855.97, 64,325.42 and 20,684.96

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Solution

The fourth proportional to 42,855.97, 64,325.42 and 20,684.96 is: 31,047.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,855.97 : 64,325.42 = 20,684.96 : x
  2. Step 2: Convert to fraction form
    42,855.97/64,325.42 = 20,684.96/x
  3. Step 3: Cross multiply
    42,855.97x = 64,325.42 × 20,684.96
  4. Step 4: Simplify right side
    42,855.97x = 1,330,568,739.68
  5. Step 5: Solve for x
    x = 1,330,568,739.68/42,855.97
  6. Step 6: Final answer
    x = 31,047.45

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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.