Home / 15,445.82-21,299.60-13,738.94

Finding the Fourth Proportional to 15,445.82, 21,299.60 and 13,738.94

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Solution

The fourth proportional to 15,445.82, 21,299.60 and 13,738.94 is: 18,945.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,445.82 : 21,299.60 = 13,738.94 : x
  2. Step 2: Convert to fraction form
    15,445.82/21,299.60 = 13,738.94/x
  3. Step 3: Cross multiply
    15,445.82x = 21,299.60 × 13,738.94
  4. Step 4: Simplify right side
    15,445.82x = 292,633,926.42
  5. Step 5: Solve for x
    x = 292,633,926.42/15,445.82
  6. Step 6: Final answer
    x = 18,945.83

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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.