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Finding the Fourth Proportional to 18,880.91, 26,054.09 and 11,118.47

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Solution

The fourth proportional to 18,880.91, 26,054.09 and 11,118.47 is: 15,342.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,880.91 : 26,054.09 = 11,118.47 : x
  2. Step 2: Convert to fraction form
    18,880.91/26,054.09 = 11,118.47/x
  3. Step 3: Cross multiply
    18,880.91x = 26,054.09 × 11,118.47
  4. Step 4: Simplify right side
    18,880.91x = 289,681,627.59
  5. Step 5: Solve for x
    x = 289,681,627.59/18,880.91
  6. Step 6: Final answer
    x = 15,342.57

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Double scale
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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.