Home / 20,625.78-28,463.52-11,194.38

Finding the Fourth Proportional to 20,625.78, 28,463.52 and 11,194.38

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Solution

The fourth proportional to 20,625.78, 28,463.52 and 11,194.38 is: 15,448.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,625.78 : 28,463.52 = 11,194.38 : x
  2. Step 2: Convert to fraction form
    20,625.78/28,463.52 = 11,194.38/x
  3. Step 3: Cross multiply
    20,625.78x = 28,463.52 × 11,194.38
  4. Step 4: Simplify right side
    20,625.78x = 318,631,459.02
  5. Step 5: Solve for x
    x = 318,631,459.02/20,625.78
  6. Step 6: Final answer
    x = 15,448.21

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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.