Home / 19,919.76-29,893.23-12,903

Finding the Fourth Proportional to 19,919.76, 29,893.23 and 12,903

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Solution

The fourth proportional to 19,919.76, 29,893.23 and 12,903 is: 19,363.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,919.76 : 29,893.23 = 12,903 : x
  2. Step 2: Convert to fraction form
    19,919.76/29,893.23 = 12,903/x
  3. Step 3: Cross multiply
    19,919.76x = 29,893.23 × 12,903
  4. Step 4: Simplify right side
    19,919.76x = 385,712,346.69
  5. Step 5: Solve for x
    x = 385,712,346.69/19,919.76
  6. Step 6: Final answer
    x = 19,363.30

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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.