Home / 21,289.20-31,935.24-6,499.44

Finding the Fourth Proportional to 21,289.20, 31,935.24 and 6,499.44

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Solution

The fourth proportional to 21,289.20, 31,935.24 and 6,499.44 is: 9,749.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.20 : 31,935.24 = 6,499.44 : x
  2. Step 2: Convert to fraction form
    21,289.20/31,935.24 = 6,499.44/x
  3. Step 3: Cross multiply
    21,289.20x = 31,935.24 × 6,499.44
  4. Step 4: Simplify right side
    21,289.20x = 207,561,176.27
  5. Step 5: Solve for x
    x = 207,561,176.27/21,289.20
  6. Step 6: Final answer
    x = 9,749.60

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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.