Home / 18,775.14-28,199.16-13,825.23

Finding the Fourth Proportional to 18,775.14, 28,199.16 and 13,825.23

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Solution

The fourth proportional to 18,775.14, 28,199.16 and 13,825.23 is: 20,764.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,775.14 : 28,199.16 = 13,825.23 : x
  2. Step 2: Convert to fraction form
    18,775.14/28,199.16 = 13,825.23/x
  3. Step 3: Cross multiply
    18,775.14x = 28,199.16 × 13,825.23
  4. Step 4: Simplify right side
    18,775.14x = 389,859,872.81
  5. Step 5: Solve for x
    x = 389,859,872.81/18,775.14
  6. Step 6: Final answer
    x = 20,764.69

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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.