Home / 13,176.22-19,740.40-7,617.82

Finding the Fourth Proportional to 13,176.22, 19,740.40 and 7,617.82

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Solution

The fourth proportional to 13,176.22, 19,740.40 and 7,617.82 is: 11,412.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,176.22 : 19,740.40 = 7,617.82 : x
  2. Step 2: Convert to fraction form
    13,176.22/19,740.40 = 7,617.82/x
  3. Step 3: Cross multiply
    13,176.22x = 19,740.40 × 7,617.82
  4. Step 4: Simplify right side
    13,176.22x = 150,378,813.93
  5. Step 5: Solve for x
    x = 150,378,813.93/13,176.22
  6. Step 6: Final answer
    x = 11,412.89

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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.