Home / 13,789.74-20,686.64-6,394.94

Finding the Fourth Proportional to 13,789.74, 20,686.64 and 6,394.94

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Solution

The fourth proportional to 13,789.74, 20,686.64 and 6,394.94 is: 9,593.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.74 : 20,686.64 = 6,394.94 : x
  2. Step 2: Convert to fraction form
    13,789.74/20,686.64 = 6,394.94/x
  3. Step 3: Cross multiply
    13,789.74x = 20,686.64 × 6,394.94
  4. Step 4: Simplify right side
    13,789.74x = 132,289,686.19
  5. Step 5: Solve for x
    x = 132,289,686.19/13,789.74
  6. Step 6: Final answer
    x = 9,593.34

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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.