Home / 13,968.18-20,951.64-4,107.78

Finding the Fourth Proportional to 13,968.18, 20,951.64 and 4,107.78

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Solution

The fourth proportional to 13,968.18, 20,951.64 and 4,107.78 is: 6,161.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,968.18 : 20,951.64 = 4,107.78 : x
  2. Step 2: Convert to fraction form
    13,968.18/20,951.64 = 4,107.78/x
  3. Step 3: Cross multiply
    13,968.18x = 20,951.64 × 4,107.78
  4. Step 4: Simplify right side
    13,968.18x = 86,064,727.76
  5. Step 5: Solve for x
    x = 86,064,727.76/13,968.18
  6. Step 6: Final answer
    x = 6,161.48

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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.