Home / 13,660.48-20,486.96-8,655.34

Finding the Fourth Proportional to 13,660.48, 20,486.96 and 8,655.34

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Solution

The fourth proportional to 13,660.48, 20,486.96 and 8,655.34 is: 12,980.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,660.48 : 20,486.96 = 8,655.34 : x
  2. Step 2: Convert to fraction form
    13,660.48/20,486.96 = 8,655.34/x
  3. Step 3: Cross multiply
    13,660.48x = 20,486.96 × 8,655.34
  4. Step 4: Simplify right side
    13,660.48x = 177,321,604.37
  5. Step 5: Solve for x
    x = 177,321,604.37/13,660.48
  6. Step 6: Final answer
    x = 12,980.63

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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.