Home / 18,387.63-25,372.31-11,316.33

Finding the Fourth Proportional to 18,387.63, 25,372.31 and 11,316.33

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Solution

The fourth proportional to 18,387.63, 25,372.31 and 11,316.33 is: 15,614.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.63 : 25,372.31 = 11,316.33 : x
  2. Step 2: Convert to fraction form
    18,387.63/25,372.31 = 11,316.33/x
  3. Step 3: Cross multiply
    18,387.63x = 25,372.31 × 11,316.33
  4. Step 4: Simplify right side
    18,387.63x = 287,121,376.24
  5. Step 5: Solve for x
    x = 287,121,376.24/18,387.63
  6. Step 6: Final answer
    x = 15,614.92

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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.