Home / 30,187.31-41,631.21-18,857.84

Finding the Fourth Proportional to 30,187.31, 41,631.21 and 18,857.84

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Solution

The fourth proportional to 30,187.31, 41,631.21 and 18,857.84 is: 26,006.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,187.31 : 41,631.21 = 18,857.84 : x
  2. Step 2: Convert to fraction form
    30,187.31/41,631.21 = 18,857.84/x
  3. Step 3: Cross multiply
    30,187.31x = 41,631.21 × 18,857.84
  4. Step 4: Simplify right side
    30,187.31x = 785,074,489.03
  5. Step 5: Solve for x
    x = 785,074,489.03/30,187.31
  6. Step 6: Final answer
    x = 26,006.78

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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.