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Finding the Fourth Proportional to 14,187, 21,278.07 and 3,796.32

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Solution

The fourth proportional to 14,187, 21,278.07 and 3,796.32 is: 5,693.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,187 : 21,278.07 = 3,796.32 : x
  2. Step 2: Convert to fraction form
    14,187/21,278.07 = 3,796.32/x
  3. Step 3: Cross multiply
    14,187x = 21,278.07 × 3,796.32
  4. Step 4: Simplify right side
    14,187x = 80,778,362.70
  5. Step 5: Solve for x
    x = 80,778,362.70/14,187
  6. Step 6: Final answer
    x = 5,693.83

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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.