Home / 18,314.60-27,476.85-7,785.05

Finding the Fourth Proportional to 18,314.60, 27,476.85 and 7,785.05

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Solution

The fourth proportional to 18,314.60, 27,476.85 and 7,785.05 is: 11,679.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,314.60 : 27,476.85 = 7,785.05 : x
  2. Step 2: Convert to fraction form
    18,314.60/27,476.85 = 7,785.05/x
  3. Step 3: Cross multiply
    18,314.60x = 27,476.85 × 7,785.05
  4. Step 4: Simplify right side
    18,314.60x = 213,908,651.09
  5. Step 5: Solve for x
    x = 213,908,651.09/18,314.60
  6. Step 6: Final answer
    x = 11,679.68

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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.