Home / 20,314.75-28,037.60-11,929.63

Finding the Fourth Proportional to 20,314.75, 28,037.60 and 11,929.63

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Solution

The fourth proportional to 20,314.75, 28,037.60 and 11,929.63 is: 16,464.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,314.75 : 28,037.60 = 11,929.63 : x
  2. Step 2: Convert to fraction form
    20,314.75/28,037.60 = 11,929.63/x
  3. Step 3: Cross multiply
    20,314.75x = 28,037.60 × 11,929.63
  4. Step 4: Simplify right side
    20,314.75x = 334,478,194.09
  5. Step 5: Solve for x
    x = 334,478,194.09/20,314.75
  6. Step 6: Final answer
    x = 16,464.79

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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.