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Finding the Fourth Proportional to 19,998.24, 29,999.09 and 5,207.16

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Solution

The fourth proportional to 19,998.24, 29,999.09 and 5,207.16 is: 7,811.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,998.24 : 29,999.09 = 5,207.16 : x
  2. Step 2: Convert to fraction form
    19,998.24/29,999.09 = 5,207.16/x
  3. Step 3: Cross multiply
    19,998.24x = 29,999.09 × 5,207.16
  4. Step 4: Simplify right side
    19,998.24x = 156,210,061.48
  5. Step 5: Solve for x
    x = 156,210,061.48/19,998.24
  6. Step 6: Final answer
    x = 7,811.19

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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.