Home / 18,163.51-25,074.98-12,564.79

Finding the Fourth Proportional to 18,163.51, 25,074.98 and 12,564.79

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Solution

The fourth proportional to 18,163.51, 25,074.98 and 12,564.79 is: 17,345.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,163.51 : 25,074.98 = 12,564.79 : x
  2. Step 2: Convert to fraction form
    18,163.51/25,074.98 = 12,564.79/x
  3. Step 3: Cross multiply
    18,163.51x = 25,074.98 × 12,564.79
  4. Step 4: Simplify right side
    18,163.51x = 315,061,857.95
  5. Step 5: Solve for x
    x = 315,061,857.95/18,163.51
  6. Step 6: Final answer
    x = 17,345.87

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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.