Home / 21,328.76-31,993.14-10,933.88

Finding the Fourth Proportional to 21,328.76, 31,993.14 and 10,933.88

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Solution

The fourth proportional to 21,328.76, 31,993.14 and 10,933.88 is: 16,400.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.76 : 31,993.14 = 10,933.88 : x
  2. Step 2: Convert to fraction form
    21,328.76/31,993.14 = 10,933.88/x
  3. Step 3: Cross multiply
    21,328.76x = 31,993.14 × 10,933.88
  4. Step 4: Simplify right side
    21,328.76x = 349,809,153.58
  5. Step 5: Solve for x
    x = 349,809,153.58/21,328.76
  6. Step 6: Final answer
    x = 16,400.82

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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.