Home / 12,257.40-18,395.37-8,979.02

Finding the Fourth Proportional to 12,257.40, 18,395.37 and 8,979.02

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Solution

The fourth proportional to 12,257.40, 18,395.37 and 8,979.02 is: 13,475.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,257.40 : 18,395.37 = 8,979.02 : x
  2. Step 2: Convert to fraction form
    12,257.40/18,395.37 = 8,979.02/x
  3. Step 3: Cross multiply
    12,257.40x = 18,395.37 × 8,979.02
  4. Step 4: Simplify right side
    12,257.40x = 165,172,395.14
  5. Step 5: Solve for x
    x = 165,172,395.14/12,257.40
  6. Step 6: Final answer
    x = 13,475.32

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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.