Home / 21,288.52-31,933.98-6,499.72

Finding the Fourth Proportional to 21,288.52, 31,933.98 and 6,499.72

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Solution

The fourth proportional to 21,288.52, 31,933.98 and 6,499.72 is: 9,749.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.52 : 31,933.98 = 6,499.72 : x
  2. Step 2: Convert to fraction form
    21,288.52/31,933.98 = 6,499.72/x
  3. Step 3: Cross multiply
    21,288.52x = 31,933.98 × 6,499.72
  4. Step 4: Simplify right side
    21,288.52x = 207,561,928.49
  5. Step 5: Solve for x
    x = 207,561,928.49/21,288.52
  6. Step 6: Final answer
    x = 9,749.95

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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.