Home / 12,145.20-18,217.98-11,548.59

Finding the Fourth Proportional to 12,145.20, 18,217.98 and 11,548.59

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Solution

The fourth proportional to 12,145.20, 18,217.98 and 11,548.59 is: 17,323.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.20 : 18,217.98 = 11,548.59 : x
  2. Step 2: Convert to fraction form
    12,145.20/18,217.98 = 11,548.59/x
  3. Step 3: Cross multiply
    12,145.20x = 18,217.98 × 11,548.59
  4. Step 4: Simplify right side
    12,145.20x = 210,391,981.65
  5. Step 5: Solve for x
    x = 210,391,981.65/12,145.20
  6. Step 6: Final answer
    x = 17,323.06

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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.