Home / 13,835.52-20,759.76-8,638.56

Finding the Fourth Proportional to 13,835.52, 20,759.76 and 8,638.56

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Solution

The fourth proportional to 13,835.52, 20,759.76 and 8,638.56 is: 12,961.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,835.52 : 20,759.76 = 8,638.56 : x
  2. Step 2: Convert to fraction form
    13,835.52/20,759.76 = 8,638.56/x
  3. Step 3: Cross multiply
    13,835.52x = 20,759.76 × 8,638.56
  4. Step 4: Simplify right side
    13,835.52x = 179,334,432.35
  5. Step 5: Solve for x
    x = 179,334,432.35/13,835.52
  6. Step 6: Final answer
    x = 12,961.89

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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.