Home / 18,738.57-25,860.39-10,780.62

Finding the Fourth Proportional to 18,738.57, 25,860.39 and 10,780.62

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Solution

The fourth proportional to 18,738.57, 25,860.39 and 10,780.62 is: 14,877.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,738.57 : 25,860.39 = 10,780.62 : x
  2. Step 2: Convert to fraction form
    18,738.57/25,860.39 = 10,780.62/x
  3. Step 3: Cross multiply
    18,738.57x = 25,860.39 × 10,780.62
  4. Step 4: Simplify right side
    18,738.57x = 278,791,037.64
  5. Step 5: Solve for x
    x = 278,791,037.64/18,738.57
  6. Step 6: Final answer
    x = 14,877.92

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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.