Home / 20,504.64-28,297.71-15,459.96

Finding the Fourth Proportional to 20,504.64, 28,297.71 and 15,459.96

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Solution

The fourth proportional to 20,504.64, 28,297.71 and 15,459.96 is: 21,335.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504.64 : 28,297.71 = 15,459.96 : x
  2. Step 2: Convert to fraction form
    20,504.64/28,297.71 = 15,459.96/x
  3. Step 3: Cross multiply
    20,504.64x = 28,297.71 × 15,459.96
  4. Step 4: Simplify right side
    20,504.64x = 437,481,464.69
  5. Step 5: Solve for x
    x = 437,481,464.69/20,504.64
  6. Step 6: Final answer
    x = 21,335.73

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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.