Home / 18,780.19-28,178.19-8,244.78

Finding the Fourth Proportional to 18,780.19, 28,178.19 and 8,244.78

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Solution

The fourth proportional to 18,780.19, 28,178.19 and 8,244.78 is: 12,370.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.19 : 28,178.19 = 8,244.78 : x
  2. Step 2: Convert to fraction form
    18,780.19/28,178.19 = 8,244.78/x
  3. Step 3: Cross multiply
    18,780.19x = 28,178.19 × 8,244.78
  4. Step 4: Simplify right side
    18,780.19x = 232,322,977.35
  5. Step 5: Solve for x
    x = 232,322,977.35/18,780.19
  6. Step 6: Final answer
    x = 12,370.64

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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.