Home / 20,813.96-31,193.40-10,933.04

Finding the Fourth Proportional to 20,813.96, 31,193.40 and 10,933.04

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Solution

The fourth proportional to 20,813.96, 31,193.40 and 10,933.04 is: 16,385.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,813.96 : 31,193.40 = 10,933.04 : x
  2. Step 2: Convert to fraction form
    20,813.96/31,193.40 = 10,933.04/x
  3. Step 3: Cross multiply
    20,813.96x = 31,193.40 × 10,933.04
  4. Step 4: Simplify right side
    20,813.96x = 341,038,689.94
  5. Step 5: Solve for x
    x = 341,038,689.94/20,813.96
  6. Step 6: Final answer
    x = 16,385.09

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1.5x scale

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.