Home / 13,080.92-18,051.58-7,112.44

Finding the Fourth Proportional to 13,080.92, 18,051.58 and 7,112.44

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Solution

The fourth proportional to 13,080.92, 18,051.58 and 7,112.44 is: 9,815.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.92 : 18,051.58 = 7,112.44 : x
  2. Step 2: Convert to fraction form
    13,080.92/18,051.58 = 7,112.44/x
  3. Step 3: Cross multiply
    13,080.92x = 18,051.58 × 7,112.44
  4. Step 4: Simplify right side
    13,080.92x = 128,390,779.66
  5. Step 5: Solve for x
    x = 128,390,779.66/13,080.92
  6. Step 6: Final answer
    x = 9,815.12

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Double scale
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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.