Home / 30,106.79-41,541.38-18,170.78

Finding the Fourth Proportional to 30,106.79, 41,541.38 and 18,170.78

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Solution

The fourth proportional to 30,106.79, 41,541.38 and 18,170.78 is: 25,072.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,106.79 : 41,541.38 = 18,170.78 : x
  2. Step 2: Convert to fraction form
    30,106.79/41,541.38 = 18,170.78/x
  3. Step 3: Cross multiply
    30,106.79x = 41,541.38 × 18,170.78
  4. Step 4: Simplify right side
    30,106.79x = 754,839,331.23
  5. Step 5: Solve for x
    x = 754,839,331.23/30,106.79
  6. Step 6: Final answer
    x = 25,072.06

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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.