Home / 20,344.64-28,078.04-12,388.01

Finding the Fourth Proportional to 20,344.64, 28,078.04 and 12,388.01

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Solution

The fourth proportional to 20,344.64, 28,078.04 and 12,388.01 is: 17,096.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,344.64 : 28,078.04 = 12,388.01 : x
  2. Step 2: Convert to fraction form
    20,344.64/28,078.04 = 12,388.01/x
  3. Step 3: Cross multiply
    20,344.64x = 28,078.04 × 12,388.01
  4. Step 4: Simplify right side
    20,344.64x = 347,830,930.88
  5. Step 5: Solve for x
    x = 347,830,930.88/20,344.64
  6. Step 6: Final answer
    x = 17,096.94

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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.