Home / 19,998.31-29,997.96-5,207.89

Finding the Fourth Proportional to 19,998.31, 29,997.96 and 5,207.89

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Solution

The fourth proportional to 19,998.31, 29,997.96 and 5,207.89 is: 7,811.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,998.31 : 29,997.96 = 5,207.89 : x
  2. Step 2: Convert to fraction form
    19,998.31/29,997.96 = 5,207.89/x
  3. Step 3: Cross multiply
    19,998.31x = 29,997.96 × 5,207.89
  4. Step 4: Simplify right side
    19,998.31x = 156,226,075.90
  5. Step 5: Solve for x
    x = 156,226,075.90/19,998.31
  6. Step 6: Final answer
    x = 7,811.96

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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.