Home / 14,388.68-21,581.64-6,491.72

Finding the Fourth Proportional to 14,388.68, 21,581.64 and 6,491.72

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Solution

The fourth proportional to 14,388.68, 21,581.64 and 6,491.72 is: 9,736.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,388.68 : 21,581.64 = 6,491.72 : x
  2. Step 2: Convert to fraction form
    14,388.68/21,581.64 = 6,491.72/x
  3. Step 3: Cross multiply
    14,388.68x = 21,581.64 × 6,491.72
  4. Step 4: Simplify right side
    14,388.68x = 140,101,856.11
  5. Step 5: Solve for x
    x = 140,101,856.11/14,388.68
  6. Step 6: Final answer
    x = 9,736.95

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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.