Home / 30,743.52-42,428.48-18,170.68

Finding the Fourth Proportional to 30,743.52, 42,428.48 and 18,170.68

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Solution

The fourth proportional to 30,743.52, 42,428.48 and 18,170.68 is: 25,076.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,743.52 : 42,428.48 = 18,170.68 : x
  2. Step 2: Convert to fraction form
    30,743.52/42,428.48 = 18,170.68/x
  3. Step 3: Cross multiply
    30,743.52x = 42,428.48 × 18,170.68
  4. Step 4: Simplify right side
    30,743.52x = 770,954,332.97
  5. Step 5: Solve for x
    x = 770,954,332.97/30,743.52
  6. Step 6: Final answer
    x = 25,076.97

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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.