Home / 11,817.12-17,727.60-5,661.12

Finding the Fourth Proportional to 11,817.12, 17,727.60 and 5,661.12

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Solution

The fourth proportional to 11,817.12, 17,727.60 and 5,661.12 is: 8,492.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,817.12 : 17,727.60 = 5,661.12 : x
  2. Step 2: Convert to fraction form
    11,817.12/17,727.60 = 5,661.12/x
  3. Step 3: Cross multiply
    11,817.12x = 17,727.60 × 5,661.12
  4. Step 4: Simplify right side
    11,817.12x = 100,358,070.91
  5. Step 5: Solve for x
    x = 100,358,070.91/11,817.12
  6. Step 6: Final answer
    x = 8,492.60

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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.