Home / 12,513.87-18,776.03-5,490.26

Finding the Fourth Proportional to 12,513.87, 18,776.03 and 5,490.26

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Solution

The fourth proportional to 12,513.87, 18,776.03 and 5,490.26 is: 8,237.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,513.87 : 18,776.03 = 5,490.26 : x
  2. Step 2: Convert to fraction form
    12,513.87/18,776.03 = 5,490.26/x
  3. Step 3: Cross multiply
    12,513.87x = 18,776.03 × 5,490.26
  4. Step 4: Simplify right side
    12,513.87x = 103,085,286.47
  5. Step 5: Solve for x
    x = 103,085,286.47/12,513.87
  6. Step 6: Final answer
    x = 8,237.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.