Home / 14,318.28-21,477.78-3,930

Finding the Fourth Proportional to 14,318.28, 21,477.78 and 3,930

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Solution

The fourth proportional to 14,318.28, 21,477.78 and 3,930 is: 5,895.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,318.28 : 21,477.78 = 3,930 : x
  2. Step 2: Convert to fraction form
    14,318.28/21,477.78 = 3,930/x
  3. Step 3: Cross multiply
    14,318.28x = 21,477.78 × 3,930
  4. Step 4: Simplify right side
    14,318.28x = 84,407,675.40
  5. Step 5: Solve for x
    x = 84,407,675.40/14,318.28
  6. Step 6: Final answer
    x = 5,895.10

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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.