Home / 21,619.76-29,835.23-12,188.32

Finding the Fourth Proportional to 21,619.76, 29,835.23 and 12,188.32

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Solution

The fourth proportional to 21,619.76, 29,835.23 and 12,188.32 is: 16,819.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,619.76 : 29,835.23 = 12,188.32 : x
  2. Step 2: Convert to fraction form
    21,619.76/29,835.23 = 12,188.32/x
  3. Step 3: Cross multiply
    21,619.76x = 29,835.23 × 12,188.32
  4. Step 4: Simplify right side
    21,619.76x = 363,641,194.98
  5. Step 5: Solve for x
    x = 363,641,194.98/21,619.76
  6. Step 6: Final answer
    x = 16,819.86

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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.