Home / 20,735.94-28,615.60-11,305.10

Finding the Fourth Proportional to 20,735.94, 28,615.60 and 11,305.10

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Solution

The fourth proportional to 20,735.94, 28,615.60 and 11,305.10 is: 15,601.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.94 : 28,615.60 = 11,305.10 : x
  2. Step 2: Convert to fraction form
    20,735.94/28,615.60 = 11,305.10/x
  3. Step 3: Cross multiply
    20,735.94x = 28,615.60 × 11,305.10
  4. Step 4: Simplify right side
    20,735.94x = 323,502,219.56
  5. Step 5: Solve for x
    x = 323,502,219.56/20,735.94
  6. Step 6: Final answer
    x = 15,601.04

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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.