Home / 18,309.09-27,444.60-7,785.86

Finding the Fourth Proportional to 18,309.09, 27,444.60 and 7,785.86

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Solution

The fourth proportional to 18,309.09, 27,444.60 and 7,785.86 is: 11,670.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,309.09 : 27,444.60 = 7,785.86 : x
  2. Step 2: Convert to fraction form
    18,309.09/27,444.60 = 7,785.86/x
  3. Step 3: Cross multiply
    18,309.09x = 27,444.60 × 7,785.86
  4. Step 4: Simplify right side
    18,309.09x = 213,679,813.36
  5. Step 5: Solve for x
    x = 213,679,813.36/18,309.09
  6. Step 6: Final answer
    x = 11,670.70

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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.