Home / 20,657.64-28,508.69-11,708.03

Finding the Fourth Proportional to 20,657.64, 28,508.69 and 11,708.03

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Solution

The fourth proportional to 20,657.64, 28,508.69 and 11,708.03 is: 16,157.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.64 : 28,508.69 = 11,708.03 : x
  2. Step 2: Convert to fraction form
    20,657.64/28,508.69 = 11,708.03/x
  3. Step 3: Cross multiply
    20,657.64x = 28,508.69 × 11,708.03
  4. Step 4: Simplify right side
    20,657.64x = 333,780,597.78
  5. Step 5: Solve for x
    x = 333,780,597.78/20,657.64
  6. Step 6: Final answer
    x = 16,157.73

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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.