Home / 20,197.81-27,868.73-11,699.41

Finding the Fourth Proportional to 20,197.81, 27,868.73 and 11,699.41

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Solution

The fourth proportional to 20,197.81, 27,868.73 and 11,699.41 is: 16,142.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,197.81 : 27,868.73 = 11,699.41 : x
  2. Step 2: Convert to fraction form
    20,197.81/27,868.73 = 11,699.41/x
  3. Step 3: Cross multiply
    20,197.81x = 27,868.73 × 11,699.41
  4. Step 4: Simplify right side
    20,197.81x = 326,047,658.03
  5. Step 5: Solve for x
    x = 326,047,658.03/20,197.81
  6. Step 6: Final answer
    x = 16,142.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.