Home / 11,821.51-16,321.28-7,351.35

Finding the Fourth Proportional to 11,821.51, 16,321.28 and 7,351.35

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Solution

The fourth proportional to 11,821.51, 16,321.28 and 7,351.35 is: 10,149.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.51 : 16,321.28 = 7,351.35 : x
  2. Step 2: Convert to fraction form
    11,821.51/16,321.28 = 7,351.35/x
  3. Step 3: Cross multiply
    11,821.51x = 16,321.28 × 7,351.35
  4. Step 4: Simplify right side
    11,821.51x = 119,983,441.73
  5. Step 5: Solve for x
    x = 119,983,441.73/11,821.51
  6. Step 6: Final answer
    x = 10,149.59

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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.