Home / 20,512.56-28,308.96-11,559.48

Finding the Fourth Proportional to 20,512.56, 28,308.96 and 11,559.48

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Solution

The fourth proportional to 20,512.56, 28,308.96 and 11,559.48 is: 15,953.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.56 : 28,308.96 = 11,559.48 : x
  2. Step 2: Convert to fraction form
    20,512.56/28,308.96 = 11,559.48/x
  3. Step 3: Cross multiply
    20,512.56x = 28,308.96 × 11,559.48
  4. Step 4: Simplify right side
    20,512.56x = 327,236,856.94
  5. Step 5: Solve for x
    x = 327,236,856.94/20,512.56
  6. Step 6: Final answer
    x = 15,953.00

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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.