Home / 19,660.64-27,140.97-12,591.14

Finding the Fourth Proportional to 19,660.64, 27,140.97 and 12,591.14

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Solution

The fourth proportional to 19,660.64, 27,140.97 and 12,591.14 is: 17,381.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,660.64 : 27,140.97 = 12,591.14 : x
  2. Step 2: Convert to fraction form
    19,660.64/27,140.97 = 12,591.14/x
  3. Step 3: Cross multiply
    19,660.64x = 27,140.97 × 12,591.14
  4. Step 4: Simplify right side
    19,660.64x = 341,735,753.01
  5. Step 5: Solve for x
    x = 341,735,753.01/19,660.64
  6. Step 6: Final answer
    x = 17,381.72

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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.