Home / 20,850.08-28,773.12-11,418.56

Finding the Fourth Proportional to 20,850.08, 28,773.12 and 11,418.56

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Solution

The fourth proportional to 20,850.08, 28,773.12 and 11,418.56 is: 15,757.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.08 : 28,773.12 = 11,418.56 : x
  2. Step 2: Convert to fraction form
    20,850.08/28,773.12 = 11,418.56/x
  3. Step 3: Cross multiply
    20,850.08x = 28,773.12 × 11,418.56
  4. Step 4: Simplify right side
    20,850.08x = 328,547,597.11
  5. Step 5: Solve for x
    x = 328,547,597.11/20,850.08
  6. Step 6: Final answer
    x = 15,757.62

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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.