Home / 30,143.52-41,606.69-18,207.68

Finding the Fourth Proportional to 30,143.52, 41,606.69 and 18,207.68

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Solution

The fourth proportional to 30,143.52, 41,606.69 and 18,207.68 is: 25,131.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,143.52 : 41,606.69 = 18,207.68 : x
  2. Step 2: Convert to fraction form
    30,143.52/41,606.69 = 18,207.68/x
  3. Step 3: Cross multiply
    30,143.52x = 41,606.69 × 18,207.68
  4. Step 4: Simplify right side
    30,143.52x = 757,560,998.31
  5. Step 5: Solve for x
    x = 757,560,998.31/30,143.52
  6. Step 6: Final answer
    x = 25,131.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.