Home / 13,786.56-20,655.24-7,930.89

Finding the Fourth Proportional to 13,786.56, 20,655.24 and 7,930.89

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Solution

The fourth proportional to 13,786.56, 20,655.24 and 7,930.89 is: 11,882.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,786.56 : 20,655.24 = 7,930.89 : x
  2. Step 2: Convert to fraction form
    13,786.56/20,655.24 = 7,930.89/x
  3. Step 3: Cross multiply
    13,786.56x = 20,655.24 × 7,930.89
  4. Step 4: Simplify right side
    13,786.56x = 163,814,436.36
  5. Step 5: Solve for x
    x = 163,814,436.36/13,786.56
  6. Step 6: Final answer
    x = 11,882.18

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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.