Home / 17,789.28-26,658-12,147.36

Finding the Fourth Proportional to 17,789.28, 26,658 and 12,147.36

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Solution

The fourth proportional to 17,789.28, 26,658 and 12,147.36 is: 18,203.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,789.28 : 26,658 = 12,147.36 : x
  2. Step 2: Convert to fraction form
    17,789.28/26,658 = 12,147.36/x
  3. Step 3: Cross multiply
    17,789.28x = 26,658 × 12,147.36
  4. Step 4: Simplify right side
    17,789.28x = 323,824,322.88
  5. Step 5: Solve for x
    x = 323,824,322.88/17,789.28
  6. Step 6: Final answer
    x = 18,203.34

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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.