Home / 39,284.80-54,212.08-21,379.75

Finding the Fourth Proportional to 39,284.80, 54,212.08 and 21,379.75

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Solution

The fourth proportional to 39,284.80, 54,212.08 and 21,379.75 is: 29,503.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,284.80 : 54,212.08 = 21,379.75 : x
  2. Step 2: Convert to fraction form
    39,284.80/54,212.08 = 21,379.75/x
  3. Step 3: Cross multiply
    39,284.80x = 54,212.08 × 21,379.75
  4. Step 4: Simplify right side
    39,284.80x = 1,159,040,717.38
  5. Step 5: Solve for x
    x = 1,159,040,717.38/39,284.80
  6. Step 6: Final answer
    x = 29,503.54

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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.