Home / 18,081.75-27,122.63-8,720.02

Finding the Fourth Proportional to 18,081.75, 27,122.63 and 8,720.02

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Solution

The fourth proportional to 18,081.75, 27,122.63 and 8,720.02 is: 13,080.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,081.75 : 27,122.63 = 8,720.02 : x
  2. Step 2: Convert to fraction form
    18,081.75/27,122.63 = 8,720.02/x
  3. Step 3: Cross multiply
    18,081.75x = 27,122.63 × 8,720.02
  4. Step 4: Simplify right side
    18,081.75x = 236,509,991.69
  5. Step 5: Solve for x
    x = 236,509,991.69/18,081.75
  6. Step 6: Final answer
    x = 13,080.04

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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.