Home / 38,670.81-57,891.39-21,087.33

Finding the Fourth Proportional to 38,670.81, 57,891.39 and 21,087.33

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Solution

The fourth proportional to 38,670.81, 57,891.39 and 21,087.33 is: 31,568.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,670.81 : 57,891.39 = 21,087.33 : x
  2. Step 2: Convert to fraction form
    38,670.81/57,891.39 = 21,087.33/x
  3. Step 3: Cross multiply
    38,670.81x = 57,891.39 × 21,087.33
  4. Step 4: Simplify right side
    38,670.81x = 1,220,774,845.09
  5. Step 5: Solve for x
    x = 1,220,774,845.09/38,670.81
  6. Step 6: Final answer
    x = 31,568.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.