Home / 19,438.70-29,136.45-10,679.90

Finding the Fourth Proportional to 19,438.70, 29,136.45 and 10,679.90

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Solution

The fourth proportional to 19,438.70, 29,136.45 and 10,679.90 is: 16,007.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,438.70 : 29,136.45 = 10,679.90 : x
  2. Step 2: Convert to fraction form
    19,438.70/29,136.45 = 10,679.90/x
  3. Step 3: Cross multiply
    19,438.70x = 29,136.45 × 10,679.90
  4. Step 4: Simplify right side
    19,438.70x = 311,174,372.36
  5. Step 5: Solve for x
    x = 311,174,372.36/19,438.70
  6. Step 6: Final answer
    x = 16,007.98

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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.