Home / 9,990.86-13,786.67-5,513.65

Finding the Fourth Proportional to 9,990.86, 13,786.67 and 5,513.65

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Solution

The fourth proportional to 9,990.86, 13,786.67 and 5,513.65 is: 7,608.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.86 : 13,786.67 = 5,513.65 : x
  2. Step 2: Convert to fraction form
    9,990.86/13,786.67 = 5,513.65/x
  3. Step 3: Cross multiply
    9,990.86x = 13,786.67 × 5,513.65
  4. Step 4: Simplify right side
    9,990.86x = 76,014,852.36
  5. Step 5: Solve for x
    x = 76,014,852.36/9,990.86
  6. Step 6: Final answer
    x = 7,608.44

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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.