Home / 39,402.08-54,324.33-28,638.09

Finding the Fourth Proportional to 39,402.08, 54,324.33 and 28,638.09

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Solution

The fourth proportional to 39,402.08, 54,324.33 and 28,638.09 is: 39,483.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,402.08 : 54,324.33 = 28,638.09 : x
  2. Step 2: Convert to fraction form
    39,402.08/54,324.33 = 28,638.09/x
  3. Step 3: Cross multiply
    39,402.08x = 54,324.33 × 28,638.09
  4. Step 4: Simplify right side
    39,402.08x = 1,555,745,051.73
  5. Step 5: Solve for x
    x = 1,555,745,051.73/39,402.08
  6. Step 6: Final answer
    x = 39,483.83

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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.