Home / 13,736.76-18,961.20-8,071.41

Finding the Fourth Proportional to 13,736.76, 18,961.20 and 8,071.41

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Solution

The fourth proportional to 13,736.76, 18,961.20 and 8,071.41 is: 11,141.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,736.76 : 18,961.20 = 8,071.41 : x
  2. Step 2: Convert to fraction form
    13,736.76/18,961.20 = 8,071.41/x
  3. Step 3: Cross multiply
    13,736.76x = 18,961.20 × 8,071.41
  4. Step 4: Simplify right side
    13,736.76x = 153,043,619.29
  5. Step 5: Solve for x
    x = 153,043,619.29/13,736.76
  6. Step 6: Final answer
    x = 11,141.17

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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.