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Finding the Fourth Proportional to 13,998.96, 20,992.05 and 6,101.15

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Solution

The fourth proportional to 13,998.96, 20,992.05 and 6,101.15 is: 9,148.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.96 : 20,992.05 = 6,101.15 : x
  2. Step 2: Convert to fraction form
    13,998.96/20,992.05 = 6,101.15/x
  3. Step 3: Cross multiply
    13,998.96x = 20,992.05 × 6,101.15
  4. Step 4: Simplify right side
    13,998.96x = 128,075,540.90
  5. Step 5: Solve for x
    x = 128,075,540.90/13,998.96
  6. Step 6: Final answer
    x = 9,148.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.