Home / 12,211.76-16,850.40-7,175.60

Finding the Fourth Proportional to 12,211.76, 16,850.40 and 7,175.60

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Solution

The fourth proportional to 12,211.76, 16,850.40 and 7,175.60 is: 9,901.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.76 : 16,850.40 = 7,175.60 : x
  2. Step 2: Convert to fraction form
    12,211.76/16,850.40 = 7,175.60/x
  3. Step 3: Cross multiply
    12,211.76x = 16,850.40 × 7,175.60
  4. Step 4: Simplify right side
    12,211.76x = 120,911,730.24
  5. Step 5: Solve for x
    x = 120,911,730.24/12,211.76
  6. Step 6: Final answer
    x = 9,901.25

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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.