Home / 18,419.40-27,629.10-8,577.90

Finding the Fourth Proportional to 18,419.40, 27,629.10 and 8,577.90

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Solution

The fourth proportional to 18,419.40, 27,629.10 and 8,577.90 is: 12,866.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,419.40 : 27,629.10 = 8,577.90 : x
  2. Step 2: Convert to fraction form
    18,419.40/27,629.10 = 8,577.90/x
  3. Step 3: Cross multiply
    18,419.40x = 27,629.10 × 8,577.90
  4. Step 4: Simplify right side
    18,419.40x = 236,999,656.89
  5. Step 5: Solve for x
    x = 236,999,656.89/18,419.40
  6. Step 6: Final answer
    x = 12,866.85

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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.