Home / 39,072.67-53,920.22-21,167.75

Finding the Fourth Proportional to 39,072.67, 53,920.22 and 21,167.75

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Solution

The fourth proportional to 39,072.67, 53,920.22 and 21,167.75 is: 29,211.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,072.67 : 53,920.22 = 21,167.75 : x
  2. Step 2: Convert to fraction form
    39,072.67/53,920.22 = 21,167.75/x
  3. Step 3: Cross multiply
    39,072.67x = 53,920.22 × 21,167.75
  4. Step 4: Simplify right side
    39,072.67x = 1,141,369,736.91
  5. Step 5: Solve for x
    x = 1,141,369,736.91/39,072.67
  6. Step 6: Final answer
    x = 29,211.46

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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.