Home / 13,091.85-18,065.03-7,784.73

Finding the Fourth Proportional to 13,091.85, 18,065.03 and 7,784.73

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Solution

The fourth proportional to 13,091.85, 18,065.03 and 7,784.73 is: 10,741.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,091.85 : 18,065.03 = 7,784.73 : x
  2. Step 2: Convert to fraction form
    13,091.85/18,065.03 = 7,784.73/x
  3. Step 3: Cross multiply
    13,091.85x = 18,065.03 × 7,784.73
  4. Step 4: Simplify right side
    13,091.85x = 140,631,342.07
  5. Step 5: Solve for x
    x = 140,631,342.07/13,091.85
  6. Step 6: Final answer
    x = 10,741.90

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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.