Home / 30,111.71-41,561.06-20,040.57

Finding the Fourth Proportional to 30,111.71, 41,561.06 and 20,040.57

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Solution

The fourth proportional to 30,111.71, 41,561.06 and 20,040.57 is: 27,660.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,111.71 : 41,561.06 = 20,040.57 : x
  2. Step 2: Convert to fraction form
    30,111.71/41,561.06 = 20,040.57/x
  3. Step 3: Cross multiply
    30,111.71x = 41,561.06 × 20,040.57
  4. Step 4: Simplify right side
    30,111.71x = 832,907,232.00
  5. Step 5: Solve for x
    x = 832,907,232.00/30,111.71
  6. Step 6: Final answer
    x = 27,660.58

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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.