Home / 20,903.04-31,331.52-9,936

Finding the Fourth Proportional to 20,903.04, 31,331.52 and 9,936

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Solution

The fourth proportional to 20,903.04, 31,331.52 and 9,936 is: 14,893.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.04 : 31,331.52 = 9,936 : x
  2. Step 2: Convert to fraction form
    20,903.04/31,331.52 = 9,936/x
  3. Step 3: Cross multiply
    20,903.04x = 31,331.52 × 9,936
  4. Step 4: Simplify right side
    20,903.04x = 311,309,982.72
  5. Step 5: Solve for x
    x = 311,309,982.72/20,903.04
  6. Step 6: Final answer
    x = 14,893.05

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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.