Home / 13,746.76-18,969.39-8,081.75

Finding the Fourth Proportional to 13,746.76, 18,969.39 and 8,081.75

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Solution

The fourth proportional to 13,746.76, 18,969.39 and 8,081.75 is: 11,152.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,746.76 : 18,969.39 = 8,081.75 : x
  2. Step 2: Convert to fraction form
    13,746.76/18,969.39 = 8,081.75/x
  3. Step 3: Cross multiply
    13,746.76x = 18,969.39 × 8,081.75
  4. Step 4: Simplify right side
    13,746.76x = 153,305,861.70
  5. Step 5: Solve for x
    x = 153,305,861.70/13,746.76
  6. Step 6: Final answer
    x = 11,152.14

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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.