Home / 13,512.30-20,268.45-8,603.70

Finding the Fourth Proportional to 13,512.30, 20,268.45 and 8,603.70

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Solution

The fourth proportional to 13,512.30, 20,268.45 and 8,603.70 is: 12,905.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.30 : 20,268.45 = 8,603.70 : x
  2. Step 2: Convert to fraction form
    13,512.30/20,268.45 = 8,603.70/x
  3. Step 3: Cross multiply
    13,512.30x = 20,268.45 × 8,603.70
  4. Step 4: Simplify right side
    13,512.30x = 174,383,663.27
  5. Step 5: Solve for x
    x = 174,383,663.27/13,512.30
  6. Step 6: Final answer
    x = 12,905.55

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.