Home / 13,179.48-18,187.60-7,211.04

Finding the Fourth Proportional to 13,179.48, 18,187.60 and 7,211.04

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Solution

The fourth proportional to 13,179.48, 18,187.60 and 7,211.04 is: 9,951.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.48 : 18,187.60 = 7,211.04 : x
  2. Step 2: Convert to fraction form
    13,179.48/18,187.60 = 7,211.04/x
  3. Step 3: Cross multiply
    13,179.48x = 18,187.60 × 7,211.04
  4. Step 4: Simplify right side
    13,179.48x = 131,151,511.10
  5. Step 5: Solve for x
    x = 131,151,511.10/13,179.48
  6. Step 6: Final answer
    x = 9,951.19

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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.