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Finding the Fourth Proportional to 18,879.10, 26,050.88 and 10,379.82

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Solution

The fourth proportional to 18,879.10, 26,050.88 and 10,379.82 is: 14,322.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,879.10 : 26,050.88 = 10,379.82 : x
  2. Step 2: Convert to fraction form
    18,879.10/26,050.88 = 10,379.82/x
  3. Step 3: Cross multiply
    18,879.10x = 26,050.88 × 10,379.82
  4. Step 4: Simplify right side
    18,879.10x = 270,403,445.24
  5. Step 5: Solve for x
    x = 270,403,445.24/18,879.10
  6. Step 6: Final answer
    x = 14,322.90

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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.