Home / 12,928.20-19,334.70-10,854.60

Finding the Fourth Proportional to 12,928.20, 19,334.70 and 10,854.60

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Solution

The fourth proportional to 12,928.20, 19,334.70 and 10,854.60 is: 16,233.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.20 : 19,334.70 = 10,854.60 : x
  2. Step 2: Convert to fraction form
    12,928.20/19,334.70 = 10,854.60/x
  3. Step 3: Cross multiply
    12,928.20x = 19,334.70 × 10,854.60
  4. Step 4: Simplify right side
    12,928.20x = 209,870,434.62
  5. Step 5: Solve for x
    x = 209,870,434.62/12,928.20
  6. Step 6: Final answer
    x = 16,233.54

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1.5x scale

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.