Home / 30,687.06-42,375.87-19,376.58

Finding the Fourth Proportional to 30,687.06, 42,375.87 and 19,376.58

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Solution

The fourth proportional to 30,687.06, 42,375.87 and 19,376.58 is: 26,757.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,687.06 : 42,375.87 = 19,376.58 : x
  2. Step 2: Convert to fraction form
    30,687.06/42,375.87 = 19,376.58/x
  3. Step 3: Cross multiply
    30,687.06x = 42,375.87 × 19,376.58
  4. Step 4: Simplify right side
    30,687.06x = 821,099,435.12
  5. Step 5: Solve for x
    x = 821,099,435.12/30,687.06
  6. Step 6: Final answer
    x = 26,757.19

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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.