Home / 13,764.58-18,987.84-8,719.90

Finding the Fourth Proportional to 13,764.58, 18,987.84 and 8,719.90

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Solution

The fourth proportional to 13,764.58, 18,987.84 and 8,719.90 is: 12,028.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,764.58 : 18,987.84 = 8,719.90 : x
  2. Step 2: Convert to fraction form
    13,764.58/18,987.84 = 8,719.90/x
  3. Step 3: Cross multiply
    13,764.58x = 18,987.84 × 8,719.90
  4. Step 4: Simplify right side
    13,764.58x = 165,572,066.02
  5. Step 5: Solve for x
    x = 165,572,066.02/13,764.58
  6. Step 6: Final answer
    x = 12,028.85

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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.