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Finding the Fourth Proportional to 18,879.47, 26,051.54 and 11,326.10

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Solution

The fourth proportional to 18,879.47, 26,051.54 and 11,326.10 is: 15,628.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,879.47 : 26,051.54 = 11,326.10 : x
  2. Step 2: Convert to fraction form
    18,879.47/26,051.54 = 11,326.10/x
  3. Step 3: Cross multiply
    18,879.47x = 26,051.54 × 11,326.10
  4. Step 4: Simplify right side
    18,879.47x = 295,062,160.31
  5. Step 5: Solve for x
    x = 295,062,160.31/18,879.47
  6. Step 6: Final answer
    x = 15,628.74

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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.