Home / 30,936.56-42,696.60-19,611.68

Finding the Fourth Proportional to 30,936.56, 42,696.60 and 19,611.68

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Solution

The fourth proportional to 30,936.56, 42,696.60 and 19,611.68 is: 27,066.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,936.56 : 42,696.60 = 19,611.68 : x
  2. Step 2: Convert to fraction form
    30,936.56/42,696.60 = 19,611.68/x
  3. Step 3: Cross multiply
    30,936.56x = 42,696.60 × 19,611.68
  4. Step 4: Simplify right side
    30,936.56x = 837,352,056.29
  5. Step 5: Solve for x
    x = 837,352,056.29/30,936.56
  6. Step 6: Final answer
    x = 27,066.75

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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.