Home / 13,387.69-18,475.79-8,083.31

Finding the Fourth Proportional to 13,387.69, 18,475.79 and 8,083.31

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Solution

The fourth proportional to 13,387.69, 18,475.79 and 8,083.31 is: 11,155.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.69 : 18,475.79 = 8,083.31 : x
  2. Step 2: Convert to fraction form
    13,387.69/18,475.79 = 8,083.31/x
  3. Step 3: Cross multiply
    13,387.69x = 18,475.79 × 8,083.31
  4. Step 4: Simplify right side
    13,387.69x = 149,345,405.27
  5. Step 5: Solve for x
    x = 149,345,405.27/13,387.69
  6. Step 6: Final answer
    x = 11,155.43

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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.