Home / 39,695.21-54,779.09-21,545.54

Finding the Fourth Proportional to 39,695.21, 54,779.09 and 21,545.54

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Solution

The fourth proportional to 39,695.21, 54,779.09 and 21,545.54 is: 29,732.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,695.21 : 54,779.09 = 21,545.54 : x
  2. Step 2: Convert to fraction form
    39,695.21/54,779.09 = 21,545.54/x
  3. Step 3: Cross multiply
    39,695.21x = 54,779.09 × 21,545.54
  4. Step 4: Simplify right side
    39,695.21x = 1,180,245,206.69
  5. Step 5: Solve for x
    x = 1,180,245,206.69/39,695.21
  6. Step 6: Final answer
    x = 29,732.68

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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.