Home / 18,387.36-25,376.04-15,398.06

Finding the Fourth Proportional to 18,387.36, 25,376.04 and 15,398.06

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Solution

The fourth proportional to 18,387.36, 25,376.04 and 15,398.06 is: 21,250.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.36 : 25,376.04 = 15,398.06 : x
  2. Step 2: Convert to fraction form
    18,387.36/25,376.04 = 15,398.06/x
  3. Step 3: Cross multiply
    18,387.36x = 25,376.04 × 15,398.06
  4. Step 4: Simplify right side
    18,387.36x = 390,741,659.60
  5. Step 5: Solve for x
    x = 390,741,659.60/18,387.36
  6. Step 6: Final answer
    x = 21,250.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.