Home / 10,181.30-15,270.53-2,786.40

Finding the Fourth Proportional to 10,181.30, 15,270.53 and 2,786.40

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Solution

The fourth proportional to 10,181.30, 15,270.53 and 2,786.40 is: 4,179.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,181.30 : 15,270.53 = 2,786.40 : x
  2. Step 2: Convert to fraction form
    10,181.30/15,270.53 = 2,786.40/x
  3. Step 3: Cross multiply
    10,181.30x = 15,270.53 × 2,786.40
  4. Step 4: Simplify right side
    10,181.30x = 42,549,790.86
  5. Step 5: Solve for x
    x = 42,549,790.86/10,181.30
  6. Step 6: Final answer
    x = 4,179.21

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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.