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Finding the Fourth Proportional to 19,473.68, 26,879.64 and 13,185.92

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Solution

The fourth proportional to 19,473.68, 26,879.64 and 13,185.92 is: 18,200.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,473.68 : 26,879.64 = 13,185.92 : x
  2. Step 2: Convert to fraction form
    19,473.68/26,879.64 = 13,185.92/x
  3. Step 3: Cross multiply
    19,473.68x = 26,879.64 × 13,185.92
  4. Step 4: Simplify right side
    19,473.68x = 354,432,782.67
  5. Step 5: Solve for x
    x = 354,432,782.67/19,473.68
  6. Step 6: Final answer
    x = 18,200.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.