Home / 13,387.71-20,112.35-9,448.04

Finding the Fourth Proportional to 13,387.71, 20,112.35 and 9,448.04

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Solution

The fourth proportional to 13,387.71, 20,112.35 and 9,448.04 is: 14,193.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.71 : 20,112.35 = 9,448.04 : x
  2. Step 2: Convert to fraction form
    13,387.71/20,112.35 = 9,448.04/x
  3. Step 3: Cross multiply
    13,387.71x = 20,112.35 × 9,448.04
  4. Step 4: Simplify right side
    13,387.71x = 190,022,287.29
  5. Step 5: Solve for x
    x = 190,022,287.29/13,387.71
  6. Step 6: Final answer
    x = 14,193.79

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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.