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Finding the Fourth Proportional to 19,999.94, 30,001 and 5,208.90

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Solution

The fourth proportional to 19,999.94, 30,001 and 5,208.90 is: 7,813.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,999.94 : 30,001 = 5,208.90 : x
  2. Step 2: Convert to fraction form
    19,999.94/30,001 = 5,208.90/x
  3. Step 3: Cross multiply
    19,999.94x = 30,001 × 5,208.90
  4. Step 4: Simplify right side
    19,999.94x = 156,272,208.90
  5. Step 5: Solve for x
    x = 156,272,208.90/19,999.94
  6. Step 6: Final answer
    x = 7,813.63

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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.