Home / 13,081.08-18,051.79-7,112.75

Finding the Fourth Proportional to 13,081.08, 18,051.79 and 7,112.75

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Solution

The fourth proportional to 13,081.08, 18,051.79 and 7,112.75 is: 9,815.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.08 : 18,051.79 = 7,112.75 : x
  2. Step 2: Convert to fraction form
    13,081.08/18,051.79 = 7,112.75/x
  3. Step 3: Cross multiply
    13,081.08x = 18,051.79 × 7,112.75
  4. Step 4: Simplify right side
    13,081.08x = 128,397,869.32
  5. Step 5: Solve for x
    x = 128,397,869.32/13,081.08
  6. Step 6: Final answer
    x = 9,815.54

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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.