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Finding the Fourth Proportional to 13,999.99, 20,992.69 and 6,602.46

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Solution

The fourth proportional to 13,999.99, 20,992.69 and 6,602.46 is: 9,900.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.99 : 20,992.69 = 6,602.46 : x
  2. Step 2: Convert to fraction form
    13,999.99/20,992.69 = 6,602.46/x
  3. Step 3: Cross multiply
    13,999.99x = 20,992.69 × 6,602.46
  4. Step 4: Simplify right side
    13,999.99x = 138,603,404.27
  5. Step 5: Solve for x
    x = 138,603,404.27/13,999.99
  6. Step 6: Final answer
    x = 9,900.25

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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.