Home / 13,080.36-18,050.85-7,111.92

Finding the Fourth Proportional to 13,080.36, 18,050.85 and 7,111.92

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Solution

The fourth proportional to 13,080.36, 18,050.85 and 7,111.92 is: 9,814.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.36 : 18,050.85 = 7,111.92 : x
  2. Step 2: Convert to fraction form
    13,080.36/18,050.85 = 7,111.92/x
  3. Step 3: Cross multiply
    13,080.36x = 18,050.85 × 7,111.92
  4. Step 4: Simplify right side
    13,080.36x = 128,376,201.13
  5. Step 5: Solve for x
    x = 128,376,201.13/13,080.36
  6. Step 6: Final answer
    x = 9,814.42

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Half scale
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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.