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Finding the Fourth Proportional to 19,999.70, 30,001.33 and 5,208.74

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Solution

The fourth proportional to 19,999.70, 30,001.33 and 5,208.74 is: 7,813.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,999.70 : 30,001.33 = 5,208.74 : x
  2. Step 2: Convert to fraction form
    19,999.70/30,001.33 = 5,208.74/x
  3. Step 3: Cross multiply
    19,999.70x = 30,001.33 × 5,208.74
  4. Step 4: Simplify right side
    19,999.70x = 156,269,127.62
  5. Step 5: Solve for x
    x = 156,269,127.62/19,999.70
  6. Step 6: Final answer
    x = 7,813.58

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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.