Home / 39,779.61-54,896.26-21,874.75

Finding the Fourth Proportional to 39,779.61, 54,896.26 and 21,874.75

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Solution

The fourth proportional to 39,779.61, 54,896.26 and 21,874.75 is: 30,187.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,779.61 : 54,896.26 = 21,874.75 : x
  2. Step 2: Convert to fraction form
    39,779.61/54,896.26 = 21,874.75/x
  3. Step 3: Cross multiply
    39,779.61x = 54,896.26 × 21,874.75
  4. Step 4: Simplify right side
    39,779.61x = 1,200,841,812.23
  5. Step 5: Solve for x
    x = 1,200,841,812.23/39,779.61
  6. Step 6: Final answer
    x = 30,187.37

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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.