Home / 19,571.10-29,343.90-12,887.38

Finding the Fourth Proportional to 19,571.10, 29,343.90 and 12,887.38

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Solution

The fourth proportional to 19,571.10, 29,343.90 and 12,887.38 is: 19,322.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,571.10 : 29,343.90 = 12,887.38 : x
  2. Step 2: Convert to fraction form
    19,571.10/29,343.90 = 12,887.38/x
  3. Step 3: Cross multiply
    19,571.10x = 29,343.90 × 12,887.38
  4. Step 4: Simplify right side
    19,571.10x = 378,165,989.98
  5. Step 5: Solve for x
    x = 378,165,989.98/19,571.10
  6. Step 6: Final answer
    x = 19,322.67

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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.