Home / 21,327.45-31,998-10,235.01

Finding the Fourth Proportional to 21,327.45, 31,998 and 10,235.01

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Solution

The fourth proportional to 21,327.45, 31,998 and 10,235.01 is: 15,355.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.45 : 31,998 = 10,235.01 : x
  2. Step 2: Convert to fraction form
    21,327.45/31,998 = 10,235.01/x
  3. Step 3: Cross multiply
    21,327.45x = 31,998 × 10,235.01
  4. Step 4: Simplify right side
    21,327.45x = 327,499,849.98
  5. Step 5: Solve for x
    x = 327,499,849.98/21,327.45
  6. Step 6: Final answer
    x = 15,355.79

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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.