Home / 13,637.12-18,813.84-9,163.76

Finding the Fourth Proportional to 13,637.12, 18,813.84 and 9,163.76

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Solution

The fourth proportional to 13,637.12, 18,813.84 and 9,163.76 is: 12,642.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,637.12 : 18,813.84 = 9,163.76 : x
  2. Step 2: Convert to fraction form
    13,637.12/18,813.84 = 9,163.76/x
  3. Step 3: Cross multiply
    13,637.12x = 18,813.84 × 9,163.76
  4. Step 4: Simplify right side
    13,637.12x = 172,405,514.44
  5. Step 5: Solve for x
    x = 172,405,514.44/13,637.12
  6. Step 6: Final answer
    x = 12,642.37

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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.