Home / 10,878.75-15,012.69-6,163.35

Finding the Fourth Proportional to 10,878.75, 15,012.69 and 6,163.35

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Solution

The fourth proportional to 10,878.75, 15,012.69 and 6,163.35 is: 8,505.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.75 : 15,012.69 = 6,163.35 : x
  2. Step 2: Convert to fraction form
    10,878.75/15,012.69 = 6,163.35/x
  3. Step 3: Cross multiply
    10,878.75x = 15,012.69 × 6,163.35
  4. Step 4: Simplify right side
    10,878.75x = 92,528,462.91
  5. Step 5: Solve for x
    x = 92,528,462.91/10,878.75
  6. Step 6: Final answer
    x = 8,505.43

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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.