Home / 21,529.92-29,709.81-12,099.90

Finding the Fourth Proportional to 21,529.92, 29,709.81 and 12,099.90

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Solution

The fourth proportional to 21,529.92, 29,709.81 and 12,099.90 is: 16,697.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,529.92 : 29,709.81 = 12,099.90 : x
  2. Step 2: Convert to fraction form
    21,529.92/29,709.81 = 12,099.90/x
  3. Step 3: Cross multiply
    21,529.92x = 29,709.81 × 12,099.90
  4. Step 4: Simplify right side
    21,529.92x = 359,485,730.02
  5. Step 5: Solve for x
    x = 359,485,730.02/21,529.92
  6. Step 6: Final answer
    x = 16,697.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.