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Finding the Fourth Proportional to 19,379.58, 26,746.75 and 11,830.31

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Solution

The fourth proportional to 19,379.58, 26,746.75 and 11,830.31 is: 16,327.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,379.58 : 26,746.75 = 11,830.31 : x
  2. Step 2: Convert to fraction form
    19,379.58/26,746.75 = 11,830.31/x
  3. Step 3: Cross multiply
    19,379.58x = 26,746.75 × 11,830.31
  4. Step 4: Simplify right side
    19,379.58x = 316,422,325.35
  5. Step 5: Solve for x
    x = 316,422,325.35/19,379.58
  6. Step 6: Final answer
    x = 16,327.61

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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.