Home / 18,387.36-25,374.26-11,313.60

Finding the Fourth Proportional to 18,387.36, 25,374.26 and 11,313.60

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Solution

The fourth proportional to 18,387.36, 25,374.26 and 11,313.60 is: 15,612.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.36 : 25,374.26 = 11,313.60 : x
  2. Step 2: Convert to fraction form
    18,387.36/25,374.26 = 11,313.60/x
  3. Step 3: Cross multiply
    18,387.36x = 25,374.26 × 11,313.60
  4. Step 4: Simplify right side
    18,387.36x = 287,074,227.94
  5. Step 5: Solve for x
    x = 287,074,227.94/18,387.36
  6. Step 6: Final answer
    x = 15,612.59

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1.5x scale

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.