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Finding the Fourth Proportional to 9,993.65, 14,987.36 and 3,418.29

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Solution

The fourth proportional to 9,993.65, 14,987.36 and 3,418.29 is: 5,126.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,993.65 : 14,987.36 = 3,418.29 : x
  2. Step 2: Convert to fraction form
    9,993.65/14,987.36 = 3,418.29/x
  3. Step 3: Cross multiply
    9,993.65x = 14,987.36 × 3,418.29
  4. Step 4: Simplify right side
    9,993.65x = 51,231,125.72
  5. Step 5: Solve for x
    x = 51,231,125.72/9,993.65
  6. Step 6: Final answer
    x = 5,126.37

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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.