Home / 20,849.36-31,278.72-6,998

Finding the Fourth Proportional to 20,849.36, 31,278.72 and 6,998

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Solution

The fourth proportional to 20,849.36, 31,278.72 and 6,998 is: 10,498.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.36 : 31,278.72 = 6,998 : x
  2. Step 2: Convert to fraction form
    20,849.36/31,278.72 = 6,998/x
  3. Step 3: Cross multiply
    20,849.36x = 31,278.72 × 6,998
  4. Step 4: Simplify right side
    20,849.36x = 218,888,482.56
  5. Step 5: Solve for x
    x = 218,888,482.56/20,849.36
  6. Step 6: Final answer
    x = 10,498.57

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.