Home / 20,147.22-27,784.56-12,591.14

Finding the Fourth Proportional to 20,147.22, 27,784.56 and 12,591.14

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Solution

The fourth proportional to 20,147.22, 27,784.56 and 12,591.14 is: 17,364.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.22 : 27,784.56 = 12,591.14 : x
  2. Step 2: Convert to fraction form
    20,147.22/27,784.56 = 12,591.14/x
  3. Step 3: Cross multiply
    20,147.22x = 27,784.56 × 12,591.14
  4. Step 4: Simplify right side
    20,147.22x = 349,839,145.88
  5. Step 5: Solve for x
    x = 349,839,145.88/20,147.22
  6. Step 6: Final answer
    x = 17,364.14

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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.