Home / 20,615.63-28,449.57-11,662.94

Finding the Fourth Proportional to 20,615.63, 28,449.57 and 11,662.94

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Solution

The fourth proportional to 20,615.63, 28,449.57 and 11,662.94 is: 16,094.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,615.63 : 28,449.57 = 11,662.94 : x
  2. Step 2: Convert to fraction form
    20,615.63/28,449.57 = 11,662.94/x
  3. Step 3: Cross multiply
    20,615.63x = 28,449.57 × 11,662.94
  4. Step 4: Simplify right side
    20,615.63x = 331,805,485.69
  5. Step 5: Solve for x
    x = 331,805,485.69/20,615.63
  6. Step 6: Final answer
    x = 16,094.85

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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.