Home / 21,009.88-31,503.68-6,216.76

Finding the Fourth Proportional to 21,009.88, 31,503.68 and 6,216.76

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Solution

The fourth proportional to 21,009.88, 31,503.68 and 6,216.76 is: 9,321.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,009.88 : 31,503.68 = 6,216.76 : x
  2. Step 2: Convert to fraction form
    21,009.88/31,503.68 = 6,216.76/x
  3. Step 3: Cross multiply
    21,009.88x = 31,503.68 × 6,216.76
  4. Step 4: Simplify right side
    21,009.88x = 195,850,629.07
  5. Step 5: Solve for x
    x = 195,850,629.07/21,009.88
  6. Step 6: Final answer
    x = 9,321.84

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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.