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Finding the Fourth Proportional to 17,619.12, 26,379.72 and 12,060.72

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Solution

The fourth proportional to 17,619.12, 26,379.72 and 12,060.72 is: 18,057.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,619.12 : 26,379.72 = 12,060.72 : x
  2. Step 2: Convert to fraction form
    17,619.12/26,379.72 = 12,060.72/x
  3. Step 3: Cross multiply
    17,619.12x = 26,379.72 × 12,060.72
  4. Step 4: Simplify right side
    17,619.12x = 318,158,416.60
  5. Step 5: Solve for x
    x = 318,158,416.60/17,619.12
  6. Step 6: Final answer
    x = 18,057.57

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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.