Home / 18,630.64-27,918.51-13,928.59

Finding the Fourth Proportional to 18,630.64, 27,918.51 and 13,928.59

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Solution

The fourth proportional to 18,630.64, 27,918.51 and 13,928.59 is: 20,872.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.64 : 27,918.51 = 13,928.59 : x
  2. Step 2: Convert to fraction form
    18,630.64/27,918.51 = 13,928.59/x
  3. Step 3: Cross multiply
    18,630.64x = 27,918.51 × 13,928.59
  4. Step 4: Simplify right side
    18,630.64x = 388,865,479.20
  5. Step 5: Solve for x
    x = 388,865,479.20/18,630.64
  6. Step 6: Final answer
    x = 20,872.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.