Home / 26,819.90-40,219.55-12,769.10

Finding the Fourth Proportional to 26,819.90, 40,219.55 and 12,769.10

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Solution

The fourth proportional to 26,819.90, 40,219.55 and 12,769.10 is: 19,148.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,819.90 : 40,219.55 = 12,769.10 : x
  2. Step 2: Convert to fraction form
    26,819.90/40,219.55 = 12,769.10/x
  3. Step 3: Cross multiply
    26,819.90x = 40,219.55 × 12,769.10
  4. Step 4: Simplify right side
    26,819.90x = 513,567,455.91
  5. Step 5: Solve for x
    x = 513,567,455.91/26,819.90
  6. Step 6: Final answer
    x = 19,148.75

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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.