Home / 15,086.63-20,819.56-8,372.26

Finding the Fourth Proportional to 15,086.63, 20,819.56 and 8,372.26

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Solution

The fourth proportional to 15,086.63, 20,819.56 and 8,372.26 is: 11,553.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,086.63 : 20,819.56 = 8,372.26 : x
  2. Step 2: Convert to fraction form
    15,086.63/20,819.56 = 8,372.26/x
  3. Step 3: Cross multiply
    15,086.63x = 20,819.56 × 8,372.26
  4. Step 4: Simplify right side
    15,086.63x = 174,306,717.24
  5. Step 5: Solve for x
    x = 174,306,717.24/15,086.63
  6. Step 6: Final answer
    x = 11,553.72

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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.