Home / 12,945.28-19,402.92-5,538.64

Finding the Fourth Proportional to 12,945.28, 19,402.92 and 5,538.64

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Solution

The fourth proportional to 12,945.28, 19,402.92 and 5,538.64 is: 8,301.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945.28 : 19,402.92 = 5,538.64 : x
  2. Step 2: Convert to fraction form
    12,945.28/19,402.92 = 5,538.64/x
  3. Step 3: Cross multiply
    12,945.28x = 19,402.92 × 5,538.64
  4. Step 4: Simplify right side
    12,945.28x = 107,465,788.83
  5. Step 5: Solve for x
    x = 107,465,788.83/12,945.28
  6. Step 6: Final answer
    x = 8,301.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.