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Finding the Fourth Proportional to 17,878.76, 26,818.66 and 8,519.76

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Solution

The fourth proportional to 17,878.76, 26,818.66 and 8,519.76 is: 12,779.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,878.76 : 26,818.66 = 8,519.76 : x
  2. Step 2: Convert to fraction form
    17,878.76/26,818.66 = 8,519.76/x
  3. Step 3: Cross multiply
    17,878.76x = 26,818.66 × 8,519.76
  4. Step 4: Simplify right side
    17,878.76x = 228,488,546.72
  5. Step 5: Solve for x
    x = 228,488,546.72/17,878.76
  6. Step 6: Final answer
    x = 12,779.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.