Home / 13,387.34-18,473.82-7,418.54

Finding the Fourth Proportional to 13,387.34, 18,473.82 and 7,418.54

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Solution

The fourth proportional to 13,387.34, 18,473.82 and 7,418.54 is: 10,237.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.34 : 18,473.82 = 7,418.54 : x
  2. Step 2: Convert to fraction form
    13,387.34/18,473.82 = 7,418.54/x
  3. Step 3: Cross multiply
    13,387.34x = 18,473.82 × 7,418.54
  4. Step 4: Simplify right side
    13,387.34x = 137,048,772.62
  5. Step 5: Solve for x
    x = 137,048,772.62/13,387.34
  6. Step 6: Final answer
    x = 10,237.19

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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.