Home / 10,986.57-15,161.85-6,270.75

Finding the Fourth Proportional to 10,986.57, 15,161.85 and 6,270.75

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Solution

The fourth proportional to 10,986.57, 15,161.85 and 6,270.75 is: 8,653.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,986.57 : 15,161.85 = 6,270.75 : x
  2. Step 2: Convert to fraction form
    10,986.57/15,161.85 = 6,270.75/x
  3. Step 3: Cross multiply
    10,986.57x = 15,161.85 × 6,270.75
  4. Step 4: Simplify right side
    10,986.57x = 95,076,170.89
  5. Step 5: Solve for x
    x = 95,076,170.89/10,986.57
  6. Step 6: Final answer
    x = 8,653.85

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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.