Home / 12,913.94-17,827.14-9,928.73

Finding the Fourth Proportional to 12,913.94, 17,827.14 and 9,928.73

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Solution

The fourth proportional to 12,913.94, 17,827.14 and 9,928.73 is: 13,706.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,913.94 : 17,827.14 = 9,928.73 : x
  2. Step 2: Convert to fraction form
    12,913.94/17,827.14 = 9,928.73/x
  3. Step 3: Cross multiply
    12,913.94x = 17,827.14 × 9,928.73
  4. Step 4: Simplify right side
    12,913.94x = 177,000,770.60
  5. Step 5: Solve for x
    x = 177,000,770.60/12,913.94
  6. Step 6: Final answer
    x = 13,706.18

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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.