Home / 13,730.06-18,946.42-8,351.78

Finding the Fourth Proportional to 13,730.06, 18,946.42 and 8,351.78

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Solution

The fourth proportional to 13,730.06, 18,946.42 and 8,351.78 is: 11,524.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.06 : 18,946.42 = 8,351.78 : x
  2. Step 2: Convert to fraction form
    13,730.06/18,946.42 = 8,351.78/x
  3. Step 3: Cross multiply
    13,730.06x = 18,946.42 × 8,351.78
  4. Step 4: Simplify right side
    13,730.06x = 158,236,216.02
  5. Step 5: Solve for x
    x = 158,236,216.02/13,730.06
  6. Step 6: Final answer
    x = 11,524.80

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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.