Home / 20,927.56-28,858.26-15,613.96

Finding the Fourth Proportional to 20,927.56, 28,858.26 and 15,613.96

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Solution

The fourth proportional to 20,927.56, 28,858.26 and 15,613.96 is: 21,531.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.56 : 28,858.26 = 15,613.96 : x
  2. Step 2: Convert to fraction form
    20,927.56/28,858.26 = 15,613.96/x
  3. Step 3: Cross multiply
    20,927.56x = 28,858.26 × 15,613.96
  4. Step 4: Simplify right side
    20,927.56x = 450,591,717.31
  5. Step 5: Solve for x
    x = 450,591,717.31/20,927.56
  6. Step 6: Final answer
    x = 21,531.02

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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.