Home / 13,356.43-18,430.64-7,387.97

Finding the Fourth Proportional to 13,356.43, 18,430.64 and 7,387.97

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Solution

The fourth proportional to 13,356.43, 18,430.64 and 7,387.97 is: 10,194.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.43 : 18,430.64 = 7,387.97 : x
  2. Step 2: Convert to fraction form
    13,356.43/18,430.64 = 7,387.97/x
  3. Step 3: Cross multiply
    13,356.43x = 18,430.64 × 7,387.97
  4. Step 4: Simplify right side
    13,356.43x = 136,164,978.46
  5. Step 5: Solve for x
    x = 136,164,978.46/13,356.43
  6. Step 6: Final answer
    x = 10,194.71

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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.