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Finding the Fourth Proportional to 19,999.66, 29,999.08 and 5,208.25

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Solution

The fourth proportional to 19,999.66, 29,999.08 and 5,208.25 is: 7,812.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,999.66 : 29,999.08 = 5,208.25 : x
  2. Step 2: Convert to fraction form
    19,999.66/29,999.08 = 5,208.25/x
  3. Step 3: Cross multiply
    19,999.66x = 29,999.08 × 5,208.25
  4. Step 4: Simplify right side
    19,999.66x = 156,242,545.39
  5. Step 5: Solve for x
    x = 156,242,545.39/19,999.66
  6. Step 6: Final answer
    x = 7,812.26

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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.