Home / 20,744.72-31,117.12-13,769.36

Finding the Fourth Proportional to 20,744.72, 31,117.12 and 13,769.36

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Solution

The fourth proportional to 20,744.72, 31,117.12 and 13,769.36 is: 20,654.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744.72 : 31,117.12 = 13,769.36 : x
  2. Step 2: Convert to fraction form
    20,744.72/31,117.12 = 13,769.36/x
  3. Step 3: Cross multiply
    20,744.72x = 31,117.12 × 13,769.36
  4. Step 4: Simplify right side
    20,744.72x = 428,462,827.44
  5. Step 5: Solve for x
    x = 428,462,827.44/20,744.72
  6. Step 6: Final answer
    x = 20,654.07

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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.