Home / 39,087.36-53,940.60-21,182.21

Finding the Fourth Proportional to 39,087.36, 53,940.60 and 21,182.21

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Solution

The fourth proportional to 39,087.36, 53,940.60 and 21,182.21 is: 29,231.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,087.36 : 53,940.60 = 21,182.21 : x
  2. Step 2: Convert to fraction form
    39,087.36/53,940.60 = 21,182.21/x
  3. Step 3: Cross multiply
    39,087.36x = 53,940.60 × 21,182.21
  4. Step 4: Simplify right side
    39,087.36x = 1,142,581,116.73
  5. Step 5: Solve for x
    x = 1,142,581,116.73/39,087.36
  6. Step 6: Final answer
    x = 29,231.47

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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.