Home / 12,174.30-18,239.58-11,518.20

Finding the Fourth Proportional to 12,174.30, 18,239.58 and 11,518.20

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Solution

The fourth proportional to 12,174.30, 18,239.58 and 11,518.20 is: 17,256.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,174.30 : 18,239.58 = 11,518.20 : x
  2. Step 2: Convert to fraction form
    12,174.30/18,239.58 = 11,518.20/x
  3. Step 3: Cross multiply
    12,174.30x = 18,239.58 × 11,518.20
  4. Step 4: Simplify right side
    12,174.30x = 210,087,130.36
  5. Step 5: Solve for x
    x = 210,087,130.36/12,174.30
  6. Step 6: Final answer
    x = 17,256.61

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1.5x scale

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.