Home / 20,775.12-28,670.56-11,824.22

Finding the Fourth Proportional to 20,775.12, 28,670.56 and 11,824.22

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Solution

The fourth proportional to 20,775.12, 28,670.56 and 11,824.22 is: 16,317.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.12 : 28,670.56 = 11,824.22 : x
  2. Step 2: Convert to fraction form
    20,775.12/28,670.56 = 11,824.22/x
  3. Step 3: Cross multiply
    20,775.12x = 28,670.56 × 11,824.22
  4. Step 4: Simplify right side
    20,775.12x = 339,007,008.96
  5. Step 5: Solve for x
    x = 339,007,008.96/20,775.12
  6. Step 6: Final answer
    x = 16,317.93

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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.