Home / 20,617.14-28,451.53-11,185.50

Finding the Fourth Proportional to 20,617.14, 28,451.53 and 11,185.50

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Solution

The fourth proportional to 20,617.14, 28,451.53 and 11,185.50 is: 15,435.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.14 : 28,451.53 = 11,185.50 : x
  2. Step 2: Convert to fraction form
    20,617.14/28,451.53 = 11,185.50/x
  3. Step 3: Cross multiply
    20,617.14x = 28,451.53 × 11,185.50
  4. Step 4: Simplify right side
    20,617.14x = 318,244,588.82
  5. Step 5: Solve for x
    x = 318,244,588.82/20,617.14
  6. Step 6: Final answer
    x = 15,435.92

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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.