Home / 20,353.10-28,086.86-11,277.58

Finding the Fourth Proportional to 20,353.10, 28,086.86 and 11,277.58

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Solution

The fourth proportional to 20,353.10, 28,086.86 and 11,277.58 is: 15,562.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,353.10 : 28,086.86 = 11,277.58 : x
  2. Step 2: Convert to fraction form
    20,353.10/28,086.86 = 11,277.58/x
  3. Step 3: Cross multiply
    20,353.10x = 28,086.86 × 11,277.58
  4. Step 4: Simplify right side
    20,353.10x = 316,751,810.60
  5. Step 5: Solve for x
    x = 316,751,810.60/20,353.10
  6. Step 6: Final answer
    x = 15,562.83

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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.