Home / 30,486.66-42,072.35-17,057.81

Finding the Fourth Proportional to 30,486.66, 42,072.35 and 17,057.81

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Solution

The fourth proportional to 30,486.66, 42,072.35 and 17,057.81 is: 23,540.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,486.66 : 42,072.35 = 17,057.81 : x
  2. Step 2: Convert to fraction form
    30,486.66/42,072.35 = 17,057.81/x
  3. Step 3: Cross multiply
    30,486.66x = 42,072.35 × 17,057.81
  4. Step 4: Simplify right side
    30,486.66x = 717,661,856.90
  5. Step 5: Solve for x
    x = 717,661,856.90/30,486.66
  6. Step 6: Final answer
    x = 23,540.19

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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.