Home / 39,120-53,985.68-22,352.96

Finding the Fourth Proportional to 39,120, 53,985.68 and 22,352.96

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Solution

The fourth proportional to 39,120, 53,985.68 and 22,352.96 is: 30,847.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,120 : 53,985.68 = 22,352.96 : x
  2. Step 2: Convert to fraction form
    39,120/53,985.68 = 22,352.96/x
  3. Step 3: Cross multiply
    39,120x = 53,985.68 × 22,352.96
  4. Step 4: Simplify right side
    39,120x = 1,206,739,745.61
  5. Step 5: Solve for x
    x = 1,206,739,745.61/39,120
  6. Step 6: Final answer
    x = 30,847.13

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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.