Home / 19,318.81-28,940.61-14,243.75

Finding the Fourth Proportional to 19,318.81, 28,940.61 and 14,243.75

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Solution

The fourth proportional to 19,318.81, 28,940.61 and 14,243.75 is: 21,337.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,318.81 : 28,940.61 = 14,243.75 : x
  2. Step 2: Convert to fraction form
    19,318.81/28,940.61 = 14,243.75/x
  3. Step 3: Cross multiply
    19,318.81x = 28,940.61 × 14,243.75
  4. Step 4: Simplify right side
    19,318.81x = 412,222,886.04
  5. Step 5: Solve for x
    x = 412,222,886.04/19,318.81
  6. Step 6: Final answer
    x = 21,337.91

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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.