Home / 12,592.22-17,378.62-7,878.02

Finding the Fourth Proportional to 12,592.22, 17,378.62 and 7,878.02

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Solution

The fourth proportional to 12,592.22, 17,378.62 and 7,878.02 is: 10,872.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,592.22 : 17,378.62 = 7,878.02 : x
  2. Step 2: Convert to fraction form
    12,592.22/17,378.62 = 7,878.02/x
  3. Step 3: Cross multiply
    12,592.22x = 17,378.62 × 7,878.02
  4. Step 4: Simplify right side
    12,592.22x = 136,909,115.93
  5. Step 5: Solve for x
    x = 136,909,115.93/12,592.22
  6. Step 6: Final answer
    x = 10,872.52

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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.