Home / 18,821.88-25,975.36-10,438.38

Finding the Fourth Proportional to 18,821.88, 25,975.36 and 10,438.38

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Solution

The fourth proportional to 18,821.88, 25,975.36 and 10,438.38 is: 14,405.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.88 : 25,975.36 = 10,438.38 : x
  2. Step 2: Convert to fraction form
    18,821.88/25,975.36 = 10,438.38/x
  3. Step 3: Cross multiply
    18,821.88x = 25,975.36 × 10,438.38
  4. Step 4: Simplify right side
    18,821.88x = 271,140,678.32
  5. Step 5: Solve for x
    x = 271,140,678.32/18,821.88
  6. Step 6: Final answer
    x = 14,405.61

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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.