Home / 20,335.56-28,059.36-11,383.20

Finding the Fourth Proportional to 20,335.56, 28,059.36 and 11,383.20

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Solution

The fourth proportional to 20,335.56, 28,059.36 and 11,383.20 is: 15,706.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.56 : 28,059.36 = 11,383.20 : x
  2. Step 2: Convert to fraction form
    20,335.56/28,059.36 = 11,383.20/x
  3. Step 3: Cross multiply
    20,335.56x = 28,059.36 × 11,383.20
  4. Step 4: Simplify right side
    20,335.56x = 319,405,306.75
  5. Step 5: Solve for x
    x = 319,405,306.75/20,335.56
  6. Step 6: Final answer
    x = 15,706.74

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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.