Home / 20,895.73-31,338.69-12,464.59

Finding the Fourth Proportional to 20,895.73, 31,338.69 and 12,464.59

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Solution

The fourth proportional to 20,895.73, 31,338.69 and 12,464.59 is: 18,693.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.73 : 31,338.69 = 12,464.59 : x
  2. Step 2: Convert to fraction form
    20,895.73/31,338.69 = 12,464.59/x
  3. Step 3: Cross multiply
    20,895.73x = 31,338.69 × 12,464.59
  4. Step 4: Simplify right side
    20,895.73x = 390,623,921.99
  5. Step 5: Solve for x
    x = 390,623,921.99/20,895.73
  6. Step 6: Final answer
    x = 18,693.96

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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.