Home / 12,739.76-19,106.40-8,577.44

Finding the Fourth Proportional to 12,739.76, 19,106.40 and 8,577.44

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Solution

The fourth proportional to 12,739.76, 19,106.40 and 8,577.44 is: 12,863.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.76 : 19,106.40 = 8,577.44 : x
  2. Step 2: Convert to fraction form
    12,739.76/19,106.40 = 8,577.44/x
  3. Step 3: Cross multiply
    12,739.76x = 19,106.40 × 8,577.44
  4. Step 4: Simplify right side
    12,739.76x = 163,883,999.62
  5. Step 5: Solve for x
    x = 163,883,999.62/12,739.76
  6. Step 6: Final answer
    x = 12,863.98

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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.