Home / 21,270.28-31,918.38-9,584.68

Finding the Fourth Proportional to 21,270.28, 31,918.38 and 9,584.68

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Solution

The fourth proportional to 21,270.28, 31,918.38 and 9,584.68 is: 14,382.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.28 : 31,918.38 = 9,584.68 : x
  2. Step 2: Convert to fraction form
    21,270.28/31,918.38 = 9,584.68/x
  3. Step 3: Cross multiply
    21,270.28x = 31,918.38 × 9,584.68
  4. Step 4: Simplify right side
    21,270.28x = 305,927,458.42
  5. Step 5: Solve for x
    x = 305,927,458.42/21,270.28
  6. Step 6: Final answer
    x = 14,382.86

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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.