Home / 13,788.11-20,681.73-8,204.06

Finding the Fourth Proportional to 13,788.11, 20,681.73 and 8,204.06

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Solution

The fourth proportional to 13,788.11, 20,681.73 and 8,204.06 is: 12,305.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.11 : 20,681.73 = 8,204.06 : x
  2. Step 2: Convert to fraction form
    13,788.11/20,681.73 = 8,204.06/x
  3. Step 3: Cross multiply
    13,788.11x = 20,681.73 × 8,204.06
  4. Step 4: Simplify right side
    13,788.11x = 169,674,050.42
  5. Step 5: Solve for x
    x = 169,674,050.42/13,788.11
  6. Step 6: Final answer
    x = 12,305.83

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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.