Home / 13,240.85-18,272.32-7,191.05

Finding the Fourth Proportional to 13,240.85, 18,272.32 and 7,191.05

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Solution

The fourth proportional to 13,240.85, 18,272.32 and 7,191.05 is: 9,923.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.85 : 18,272.32 = 7,191.05 : x
  2. Step 2: Convert to fraction form
    13,240.85/18,272.32 = 7,191.05/x
  3. Step 3: Cross multiply
    13,240.85x = 18,272.32 × 7,191.05
  4. Step 4: Simplify right side
    13,240.85x = 131,397,080.77
  5. Step 5: Solve for x
    x = 131,397,080.77/13,240.85
  6. Step 6: Final answer
    x = 9,923.61

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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.