Home / 12,211.71-16,852.35-7,176.60

Finding the Fourth Proportional to 12,211.71, 16,852.35 and 7,176.60

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Solution

The fourth proportional to 12,211.71, 16,852.35 and 7,176.60 is: 9,903.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.71 : 16,852.35 = 7,176.60 : x
  2. Step 2: Convert to fraction form
    12,211.71/16,852.35 = 7,176.60/x
  3. Step 3: Cross multiply
    12,211.71x = 16,852.35 × 7,176.60
  4. Step 4: Simplify right side
    12,211.71x = 120,942,601.92
  5. Step 5: Solve for x
    x = 120,942,601.92/12,211.71
  6. Step 6: Final answer
    x = 9,903.82

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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.