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Finding the Fourth Proportional to 30,186.84, 41,649.38 and 18,867.84

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Solution

The fourth proportional to 30,186.84, 41,649.38 and 18,867.84 is: 26,032.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,186.84 : 41,649.38 = 18,867.84 : x
  2. Step 2: Convert to fraction form
    30,186.84/41,649.38 = 18,867.84/x
  3. Step 3: Cross multiply
    30,186.84x = 41,649.38 × 18,867.84
  4. Step 4: Simplify right side
    30,186.84x = 785,833,837.94
  5. Step 5: Solve for x
    x = 785,833,837.94/30,186.84
  6. Step 6: Final answer
    x = 26,032.33

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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.