Home / 20,123.48-30,185.26-11,365.80

Finding the Fourth Proportional to 20,123.48, 30,185.26 and 11,365.80

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Solution

The fourth proportional to 20,123.48, 30,185.26 and 11,365.80 is: 17,048.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.48 : 30,185.26 = 11,365.80 : x
  2. Step 2: Convert to fraction form
    20,123.48/30,185.26 = 11,365.80/x
  3. Step 3: Cross multiply
    20,123.48x = 30,185.26 × 11,365.80
  4. Step 4: Simplify right side
    20,123.48x = 343,079,628.11
  5. Step 5: Solve for x
    x = 343,079,628.11/20,123.48
  6. Step 6: Final answer
    x = 17,048.72

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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.