Home / 30,185.68-45,272.05-18,935.59

Finding the Fourth Proportional to 30,185.68, 45,272.05 and 18,935.59

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Solution

The fourth proportional to 30,185.68, 45,272.05 and 18,935.59 is: 28,399.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,185.68 : 45,272.05 = 18,935.59 : x
  2. Step 2: Convert to fraction form
    30,185.68/45,272.05 = 18,935.59/x
  3. Step 3: Cross multiply
    30,185.68x = 45,272.05 × 18,935.59
  4. Step 4: Simplify right side
    30,185.68x = 857,252,977.26
  5. Step 5: Solve for x
    x = 857,252,977.26/30,185.68
  6. Step 6: Final answer
    x = 28,399.33

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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.