Home / 26,815.40-40,212.80-12,764.60

Finding the Fourth Proportional to 26,815.40, 40,212.80 and 12,764.60

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Solution

The fourth proportional to 26,815.40, 40,212.80 and 12,764.60 is: 19,142.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,815.40 : 40,212.80 = 12,764.60 : x
  2. Step 2: Convert to fraction form
    26,815.40/40,212.80 = 12,764.60/x
  3. Step 3: Cross multiply
    26,815.40x = 40,212.80 × 12,764.60
  4. Step 4: Simplify right side
    26,815.40x = 513,300,306.88
  5. Step 5: Solve for x
    x = 513,300,306.88/26,815.40
  6. Step 6: Final answer
    x = 19,142.00

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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.