Home / 13,998.21-19,319.37-8,028.72

Finding the Fourth Proportional to 13,998.21, 19,319.37 and 8,028.72

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Solution

The fourth proportional to 13,998.21, 19,319.37 and 8,028.72 is: 11,080.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.21 : 19,319.37 = 8,028.72 : x
  2. Step 2: Convert to fraction form
    13,998.21/19,319.37 = 8,028.72/x
  3. Step 3: Cross multiply
    13,998.21x = 19,319.37 × 8,028.72
  4. Step 4: Simplify right side
    13,998.21x = 155,109,812.31
  5. Step 5: Solve for x
    x = 155,109,812.31/13,998.21
  6. Step 6: Final answer
    x = 11,080.69

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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.