Home / 13,519.86-20,254.41-7,956.51

Finding the Fourth Proportional to 13,519.86, 20,254.41 and 7,956.51

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Solution

The fourth proportional to 13,519.86, 20,254.41 and 7,956.51 is: 11,919.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.86 : 20,254.41 = 7,956.51 : x
  2. Step 2: Convert to fraction form
    13,519.86/20,254.41 = 7,956.51/x
  3. Step 3: Cross multiply
    13,519.86x = 20,254.41 × 7,956.51
  4. Step 4: Simplify right side
    13,519.86x = 161,154,415.71
  5. Step 5: Solve for x
    x = 161,154,415.71/13,519.86
  6. Step 6: Final answer
    x = 11,919.83

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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.