Home / 19,863.41-27,423.54-13,154.78

Finding the Fourth Proportional to 19,863.41, 27,423.54 and 13,154.78

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Solution

The fourth proportional to 19,863.41, 27,423.54 and 13,154.78 is: 18,161.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,863.41 : 27,423.54 = 13,154.78 : x
  2. Step 2: Convert to fraction form
    19,863.41/27,423.54 = 13,154.78/x
  3. Step 3: Cross multiply
    19,863.41x = 27,423.54 × 13,154.78
  4. Step 4: Simplify right side
    19,863.41x = 360,750,704.08
  5. Step 5: Solve for x
    x = 360,750,704.08/19,863.41
  6. Step 6: Final answer
    x = 18,161.57

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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.