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Finding the Fourth Proportional to 30,696.76, 42,361.11 and 17,268.03

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Solution

The fourth proportional to 30,696.76, 42,361.11 and 17,268.03 is: 23,829.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,696.76 : 42,361.11 = 17,268.03 : x
  2. Step 2: Convert to fraction form
    30,696.76/42,361.11 = 17,268.03/x
  3. Step 3: Cross multiply
    30,696.76x = 42,361.11 × 17,268.03
  4. Step 4: Simplify right side
    30,696.76x = 731,492,918.31
  5. Step 5: Solve for x
    x = 731,492,918.31/30,696.76
  6. Step 6: Final answer
    x = 23,829.65

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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.