Home / 13,080.49-18,051.12-7,112.14

Finding the Fourth Proportional to 13,080.49, 18,051.12 and 7,112.14

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Solution

The fourth proportional to 13,080.49, 18,051.12 and 7,112.14 is: 9,814.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.49 : 18,051.12 = 7,112.14 : x
  2. Step 2: Convert to fraction form
    13,080.49/18,051.12 = 7,112.14/x
  3. Step 3: Cross multiply
    13,080.49x = 18,051.12 × 7,112.14
  4. Step 4: Simplify right side
    13,080.49x = 128,382,092.60
  5. Step 5: Solve for x
    x = 128,382,092.60/13,080.49
  6. Step 6: Final answer
    x = 9,814.78

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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.