Home / 39,779.30-54,895.73-21,874.56

Finding the Fourth Proportional to 39,779.30, 54,895.73 and 21,874.56

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Solution

The fourth proportional to 39,779.30, 54,895.73 and 21,874.56 is: 30,187.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,779.30 : 54,895.73 = 21,874.56 : x
  2. Step 2: Convert to fraction form
    39,779.30/54,895.73 = 21,874.56/x
  3. Step 3: Cross multiply
    39,779.30x = 54,895.73 × 21,874.56
  4. Step 4: Simplify right side
    39,779.30x = 1,200,819,624.40
  5. Step 5: Solve for x
    x = 1,200,819,624.40/39,779.30
  6. Step 6: Final answer
    x = 30,187.05

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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.