Home / 28,118.88-42,181.20-10,603.44

Finding the Fourth Proportional to 28,118.88, 42,181.20 and 10,603.44

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Solution

The fourth proportional to 28,118.88, 42,181.20 and 10,603.44 is: 15,906.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,118.88 : 42,181.20 = 10,603.44 : x
  2. Step 2: Convert to fraction form
    28,118.88/42,181.20 = 10,603.44/x
  3. Step 3: Cross multiply
    28,118.88x = 42,181.20 × 10,603.44
  4. Step 4: Simplify right side
    28,118.88x = 447,265,823.33
  5. Step 5: Solve for x
    x = 447,265,823.33/28,118.88
  6. Step 6: Final answer
    x = 15,906.25

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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.