Home / 13,586.82-18,739.17-9,109.14

Finding the Fourth Proportional to 13,586.82, 18,739.17 and 9,109.14

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Solution

The fourth proportional to 13,586.82, 18,739.17 and 9,109.14 is: 12,563.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.82 : 18,739.17 = 9,109.14 : x
  2. Step 2: Convert to fraction form
    13,586.82/18,739.17 = 9,109.14/x
  3. Step 3: Cross multiply
    13,586.82x = 18,739.17 × 9,109.14
  4. Step 4: Simplify right side
    13,586.82x = 170,697,723.01
  5. Step 5: Solve for x
    x = 170,697,723.01/13,586.82
  6. Step 6: Final answer
    x = 12,563.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.