Home / 21,579.76-32,369.64-7,738.48

Finding the Fourth Proportional to 21,579.76, 32,369.64 and 7,738.48

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Solution

The fourth proportional to 21,579.76, 32,369.64 and 7,738.48 is: 11,607.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,579.76 : 32,369.64 = 7,738.48 : x
  2. Step 2: Convert to fraction form
    21,579.76/32,369.64 = 7,738.48/x
  3. Step 3: Cross multiply
    21,579.76x = 32,369.64 × 7,738.48
  4. Step 4: Simplify right side
    21,579.76x = 250,491,811.75
  5. Step 5: Solve for x
    x = 250,491,811.75/21,579.76
  6. Step 6: Final answer
    x = 11,607.72

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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.