Home / 9,990.12-14,987.84-3,416.97

Finding the Fourth Proportional to 9,990.12, 14,987.84 and 3,416.97

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Solution

The fourth proportional to 9,990.12, 14,987.84 and 3,416.97 is: 5,126.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.12 : 14,987.84 = 3,416.97 : x
  2. Step 2: Convert to fraction form
    9,990.12/14,987.84 = 3,416.97/x
  3. Step 3: Cross multiply
    9,990.12x = 14,987.84 × 3,416.97
  4. Step 4: Simplify right side
    9,990.12x = 51,212,982.56
  5. Step 5: Solve for x
    x = 51,212,982.56/9,990.12
  6. Step 6: Final answer
    x = 5,126.36

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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.