Home / 13,955.09-20,904.35-6,447.97

Finding the Fourth Proportional to 13,955.09, 20,904.35 and 6,447.97

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Solution

The fourth proportional to 13,955.09, 20,904.35 and 6,447.97 is: 9,658.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.09 : 20,904.35 = 6,447.97 : x
  2. Step 2: Convert to fraction form
    13,955.09/20,904.35 = 6,447.97/x
  3. Step 3: Cross multiply
    13,955.09x = 20,904.35 × 6,447.97
  4. Step 4: Simplify right side
    13,955.09x = 134,790,615.56
  5. Step 5: Solve for x
    x = 134,790,615.56/13,955.09
  6. Step 6: Final answer
    x = 9,658.89

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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.